diff --git a/src/DataFixtures/TimesheetFixtures.php b/src/DataFixtures/TimesheetFixtures.php
index 3d66ed53..627bee7f 100644
--- a/src/DataFixtures/TimesheetFixtures.php
+++ b/src/DataFixtures/TimesheetFixtures.php
@@ -35,7 +35,7 @@ class TimesheetFixtures extends Fixture implements DependentFixtureInterface
     public const MIN_TIMESHEETS_PER_USER = 50;
     public const MAX_TIMESHEETS_PER_USER = 500;
     public const MAX_TIMESHEETS_TOTAL = 5000;
-    public const MAX_RUNNING_TIMESHEETS_PER_USER = 2;
+    public const MAX_RUNNING_TIMESHEETS_PER_USER = 1;
     public const TIMERANGE_DAYS = 1095; // 3 years
     public const TIMERANGE_RUNNING = 1047; // in minutes = 17:45 hours
     public const MIN_MINUTES_PER_ENTRY = 15;
diff --git a/src/EventSubscriber/UserPreferenceSubscriber.php b/src/EventSubscriber/UserPreferenceSubscriber.php
index fea3d6bc..320a4be6 100644
--- a/src/EventSubscriber/UserPreferenceSubscriber.php
+++ b/src/EventSubscriber/UserPreferenceSubscriber.php
@@ -158,6 +158,12 @@ class UserPreferenceSubscriber implements EventSubscriberInterface
                 ->setValue(false)
                 ->setOrder(800)
                 ->setType(CheckboxType::class),
+
+            (new UserPreference())
+                ->setName('timesheet.export_decimal')
+                ->setValue(false)
+                ->setOrder(900)
+                ->setType(CheckboxType::class),
         ];
     }
 
diff --git a/src/Export/Base/HtmlRenderer.php b/src/Export/Base/HtmlRenderer.php
index 9cc646d5..0d0b7b0b 100644
--- a/src/Export/Base/HtmlRenderer.php
+++ b/src/Export/Base/HtmlRenderer.php
@@ -53,6 +53,18 @@ class HtmlRenderer
         return $event->getFields();
     }
 
+    protected function getOptions(TimesheetQuery $query): array
+    {
+        $decimal = false;
+        if (null !== $query->getCurrentUser()) {
+            $decimal = (bool) $query->getCurrentUser()->getPreferenceValue('timesheet.export_decimal', $decimal);
+        } elseif (null !== $query->getUser()) {
+            $decimal = (bool) $query->getUser()->getPreferenceValue('timesheet.export_decimal', $decimal);
+        }
+
+        return ['decimal' => $decimal];
+    }
+
     /**
      * @param ExportItemInterface[] $timesheets
      * @param TimesheetQuery $query
@@ -75,7 +87,7 @@ class HtmlRenderer
         $this->dispatcher->dispatch($event);
         $userPreferences = $event->getPreferences();
 
-        $content = $this->twig->render('export/renderer/default.html.twig', [
+        $content = $this->twig->render('export/renderer/default.html.twig', array_merge([
             'entries' => $timesheets,
             'query' => $query,
             'summaries' => $this->calculateSummary($timesheets),
@@ -84,7 +96,7 @@ class HtmlRenderer
             'projectMetaFields' => $projectMetaFields,
             'activityMetaFields' => $activityMetaFields,
             'userPreferences' => $userPreferences,
-        ]);
+        ], $this->getOptions($query)));
 
         $response = new Response();
         $response->setContent($content);
diff --git a/src/Export/Base/PDFRenderer.php b/src/Export/Base/PDFRenderer.php
index 49af2bbb..a87efc4e 100644
--- a/src/Export/Base/PDFRenderer.php
+++ b/src/Export/Base/PDFRenderer.php
@@ -46,6 +46,18 @@ class PDFRenderer
         return 'export/renderer/pdf.html.twig';
     }
 
+    protected function getOptions(TimesheetQuery $query): array
+    {
+        $decimal = false;
+        if (null !== $query->getCurrentUser()) {
+            $decimal = (bool) $query->getCurrentUser()->getPreferenceValue('timesheet.export_decimal', $decimal);
+        } elseif (null !== $query->getUser()) {
+            $decimal = (bool) $query->getUser()->getPreferenceValue('timesheet.export_decimal', $decimal);
+        }
+
+        return ['decimal' => $decimal];
+    }
+
     /**
      * @param ExportItemInterface[] $timesheets
      * @param TimesheetQuery $query
@@ -56,12 +68,13 @@ class PDFRenderer
      */
     public function render(array $timesheets, TimesheetQuery $query): Response
     {
-        $content = $this->twig->render($this->getTemplate(), [
+        $content = $this->twig->render($this->getTemplate(), array_merge([
             'entries' => $timesheets,
             'query' => $query,
             'now' => $this->dateTime->createDateTime(),
             'summaries' => $this->calculateSummary($timesheets),
-        ]);
+            'decimal' => false,
+        ], $this->getOptions($query)));
 
         $content = $this->converter->convertToPdf($content);
 
diff --git a/src/Export/Timesheet/HtmlRenderer.php b/src/Export/Timesheet/HtmlRenderer.php
index e74dd6e8..c5bf9579 100644
--- a/src/Export/Timesheet/HtmlRenderer.php
+++ b/src/Export/Timesheet/HtmlRenderer.php
@@ -34,6 +34,18 @@ final class HtmlRenderer implements TimesheetExportInterface
         $this->dispatcher = $dispatcher;
     }
 
+    private function getOptions(TimesheetQuery $query): array
+    {
+        $decimal = false;
+        if (null !== $query->getCurrentUser()) {
+            $decimal = (bool) $query->getCurrentUser()->getPreferenceValue('timesheet.export_decimal', $decimal);
+        } elseif (null !== $query->getUser()) {
+            $decimal = (bool) $query->getUser()->getPreferenceValue('timesheet.export_decimal', $decimal);
+        }
+
+        return ['decimal' => $decimal];
+    }
+
     /**
      * @param Timesheet[] $timesheets
      * @param TimesheetQuery $query
@@ -53,11 +65,12 @@ final class HtmlRenderer implements TimesheetExportInterface
         $this->dispatcher->dispatch($event);
         $timesheetMetaFields = $event->getFields();
 
-        $content = $this->twig->render('timesheet/export.html.twig', [
+        $content = $this->twig->render('timesheet/export.html.twig', array_merge([
             'entries' => $timesheets,
             'query' => $query,
             'metaColumns' => $timesheetMetaFields,
-        ]);
+            'decimal' => false,
+        ], $this->getOptions($query)));
 
         $response = new Response();
         $response->setContent($content);
diff --git a/templates/export/renderer/default.html.twig b/templates/export/renderer/default.html.twig
index e0eb5161..2125ce4c 100644
--- a/templates/export/renderer/default.html.twig
+++ b/templates/export/renderer/default.html.twig
@@ -2,6 +2,7 @@
 {% import "macros/datatables.html.twig" as tables %}
 {% extends 'export/layout.html.twig' %}
 
+{% set decimal = decimal|default(false) %}
 {% set columnTitles = {} %}
 {% set columns = {
     'date': true,
@@ -201,7 +202,7 @@
                     {% if customer is not same as(summary.customer) %}
                         <tr class="summary">
                             <td colspan="2"></td>
-                            <td class="totals duration summary-duration">{{ customerDuration|duration }}</td>
+                            <td class="totals duration summary-duration">{{ customerDuration|duration(decimal) }}</td>
                             <td class="totals cost summary-rate">{{ customerRate|money(customerCurrency) }}</td>
                         </tr>
                         {% set customerCurrency = summary.currency %}
@@ -212,7 +213,7 @@
                     <tr>
                         <td>{{ summary.customer }}</td>
                         <td>{{ summary.project }}</td>
-                        <td class="duration summary-duration">{{ summary.duration|duration }}</td>
+                        <td class="duration summary-duration">{{ summary.duration|duration(decimal) }}</td>
                         <td class="cost summary-rate">{{ summary.rate|money(summary.currency) }}</td>
                     </tr>
                     {% set customerDuration = customerDuration + summary.duration %}
@@ -221,7 +222,7 @@
                 {% if customer is not same as(null) %}
                     <tr class="summary">
                         <td colspan="2"></td>
-                        <td class="totals duration summary-duration">{{ customerDuration|duration }}</td>
+                        <td class="totals duration summary-duration">{{ customerDuration|duration(decimal) }}</td>
                         <td class="totals cost summary-rate">{{ customerRate|money(customerCurrency) }}</td>
                     </tr>
                 {% endif %}
@@ -251,7 +252,7 @@
                 {% if customer is not same as(summary.customer) %}
                     <tr class="summary">
                         <td colspan="3"></td>
-                        <td class="totals duration summary-duration">{{ customerDuration|duration }}</td>
+                        <td class="totals duration summary-duration">{{ customerDuration|duration(decimal) }}</td>
                         <td class="totals cost summary-rate">{{ customerRate|money(customerCurrency) }}</td>
                     </tr>
                     {% set customerCurrency = summary.currency %}
@@ -264,7 +265,7 @@
                     <td>{{ summary.customer }}</td>
                     <td>{{ summary.project }}</td>
                     <td>{{ activitySummary.activity }}</td>
-                    <td class="duration summary-duration">{{ activitySummary.duration|duration }}</td>
+                    <td class="duration summary-duration">{{ activitySummary.duration|duration(decimal) }}</td>
                     <td class="cost summary-rate">{{ activitySummary.rate|money(activitySummary.currency) }}</td>
                 </tr>
                 {% endfor %}
@@ -274,7 +275,7 @@
                 {% if customer is not same as(null) %}
                     <tr class="summary">
                         <td colspan="3"></td>
-                        <td class="totals duration summary-duration">{{ customerDuration|duration }}</td>
+                        <td class="totals duration summary-duration">{{ customerDuration|duration(decimal) }}</td>
                         <td class="totals cost summary-rate">{{ customerRate|money(customerCurrency) }}</td>
                     </tr>
                 {% endif %}
@@ -384,7 +385,7 @@
                             {{ entry.fixedRate|money(entry.project.customer.currency) }}
                         </td>
                         <td class="column-duration text-nowrap" {% if not columns.duration %}style="display: none"{% endif %}>
-                            {{ entry.duration|duration }}
+                            {{ entry.duration|duration(decimal) }}
                         </td>
                         <td class="column-rate text-nowrap" {% if not columns.rate %}style="display: none"{% endif %}>
                             {{ entry.rate|money(entry.project.customer.currency) }}
@@ -399,7 +400,7 @@
                         {% endif %}
                     {% endfor %}
                     <th class="text-nowrap column-duration">
-                        {{- timeWorked|duration -}}
+                        {{- timeWorked|duration(decimal) -}}
                     </th>
                     <th class="text-nowrap column-rate">
                         {%- if currency is not null and currency is not same as(false) %}
diff --git a/templates/export/renderer/pdf.html.twig b/templates/export/renderer/pdf.html.twig
index b19ca999..89be4501 100644
--- a/templates/export/renderer/pdf.html.twig
+++ b/templates/export/renderer/pdf.html.twig
@@ -1,5 +1,6 @@
 {% set showUserColumn = true %}
 {% set showRateColumn = true %}
+{% set decimal = decimal|default(false) %}
 {% if query.user %}
     {# this is only triggered, if a user exports from his personal timesheet screen#}
     {% set showUserColumn = false %}
@@ -106,7 +107,7 @@ mpdf-->
         {% if customer is not same as(summary.customer) %}
                 <tr class="summary">
                     <td colspan="2"></td>
-                    <td class="totals duration">{{ customerDuration|duration }}</td>
+                    <td class="totals duration">{{ customerDuration|duration(decimal) }}</td>
                     {% if showRateColumn %}
                     <td class="totals cost">{{ customerRate|money(customerCurrency) }}</td>
                     {% endif %}
@@ -120,7 +121,7 @@ mpdf-->
         <tr class="{{ cycle(['odd', 'even'], customerCount) }}">
             <td>{{ summary.customer }}</td>
             <td>{{ summary.project }}</td>
-            <td class="duration">{{ summary.duration|duration }}</td>
+            <td class="duration">{{ summary.duration|duration(decimal) }}</td>
             {% if showRateColumn %}
             <td class="cost">{{ summary.rate|money(summary.currency) }}</td>
             {% endif %}
@@ -132,7 +133,7 @@ mpdf-->
     {% if customer is not same as(null) %}
     <tr class="summary">
         <td colspan="2"></td>
-        <td class="totals duration">{{ customerDuration|duration }}</td>
+        <td class="totals duration">{{ customerDuration|duration(decimal) }}</td>
         {% if showRateColumn %}
         <td class="totals cost">{{ customerRate|money(customerCurrency) }}</td>
         {% endif %}
@@ -189,7 +190,7 @@ mpdf-->
                     <i>{{ entry.description|escape|desc2html }}</i>
                 {% endif %}
             </td>
-            <td class="duration">{{ entry.duration|duration }}</td>
+            <td class="duration">{{ entry.duration|duration(decimal) }}</td>
             {% if showRateColumn %}
             <td class="cost">
                 {% if is_granted('view_rate', entry) %}
@@ -208,7 +209,7 @@ mpdf-->
         {% else %}
         <td colspan="2"></td>
         {% endif %}
-        <td class="totals duration">{{ duration|duration }}</td>
+        <td class="totals duration">{{ duration|duration(decimal) }}</td>
         {% if showRateColumn %}
         <td class="totals cost">{% if currency is not null %}{{ rate|money(currency) }}{% endif %}</td>
         {% endif %}
diff --git a/templates/timesheet-team/actions.html.twig b/templates/timesheet-team/actions.html.twig
index e6e78fb9..1ddda23a 100644
--- a/templates/timesheet-team/actions.html.twig
+++ b/templates/timesheet-team/actions.html.twig
@@ -38,6 +38,10 @@
             {% set actions = actions|merge({'repeat': {'url': path('restart_timesheet', {'id' : timesheet.id}), 'class': 'api-link', 'attr': {'data-payload': '{"copy": "all"}', 'data-event': 'kimai.timesheetStart kimai.timesheetUpdate', 'data-method': 'PATCH', 'data-msg-error': 'timesheet.start.error', 'data-msg-success': 'timesheet.start.success'}}}) %}
         {% endif %}
 
+        {% if is_granted('duplicate', timesheet) %}
+            {% set actions = actions|merge({'copy': {'url': path('duplicate_timesheet', {'id' : timesheet.id}), 'class': 'api-link', 'attr': {'data-payload': '{"copy": "all"}', 'data-event': 'kimai.timesheetStart kimai.timesheetUpdate', 'data-method': 'PATCH', 'data-msg-error': 'action.update.error', 'data-msg-success': 'action.update.success'}}}) %}
+        {% endif %}
+
         {% if is_granted('edit', timesheet) %}
             {% set class = '' %}
             {% if view != 'edit' %}
diff --git a/templates/timesheet/actions.html.twig b/templates/timesheet/actions.html.twig
index c258a5c2..c40bb0c5 100644
--- a/templates/timesheet/actions.html.twig
+++ b/templates/timesheet/actions.html.twig
@@ -40,7 +40,7 @@
         {% endif %}
 
         {% if is_granted('duplicate', timesheet) %}
-            {% set actions = actions|merge({'copy': {'url': path('duplicate_timesheet', {'id' : timesheet.id}), 'class': 'api-link', 'attr': {'data-payload': '{"copy": "all"}', 'data-event': 'kimai.timesheetStart kimai.timesheetUpdate', 'data-method': 'PATCH', 'data-msg-error': 'timesheet.update.error', 'data-msg-success': 'timesheet.update.success'}}}) %}
+            {% set actions = actions|merge({'copy': {'url': path('duplicate_timesheet', {'id' : timesheet.id}), 'class': 'api-link', 'attr': {'data-payload': '{"copy": "all"}', 'data-event': 'kimai.timesheetStart kimai.timesheetUpdate', 'data-method': 'PATCH', 'data-msg-error': 'action.update.error', 'data-msg-success': 'action.update.success'}}}) %}
         {% endif %}
 
         {% if is_granted('edit', timesheet) %}
diff --git a/templates/timesheet/export.html.twig b/templates/timesheet/export.html.twig
index 35319b96..80c444a9 100644
--- a/templates/timesheet/export.html.twig
+++ b/templates/timesheet/export.html.twig
@@ -4,6 +4,7 @@
 
 {% block title %}{{ 'menu.export'|trans }}{% endblock %}
 {% block invoice %}
+    {% set decimal = decimal|default(false) %}
     {% set showUserColumn = true %}
     {% if query.user %}
         {% set showUserColumn = false %}
@@ -72,7 +73,7 @@
                         {% for field in metaColumns %}
                             <td>{{ tables.datatable_meta_column(entry, field) }}</td>
                         {% endfor %}
-                        <td class="text-nowrap">{{ entry.duration|duration }}</td>
+                        <td class="text-nowrap">{{ entry.duration|duration(decimal) }}</td>
                     </tr>
                 {% endfor %}
                 </tbody>
@@ -86,7 +87,7 @@
                         <th></th>
                     {% endfor %}
                     <th>{{ 'invoice.total_working_time'|trans }}</th>
-                    <th class="text-nowrap">{{ timeWorked|duration }}</th>
+                    <th class="text-nowrap">{{ timeWorked|duration(decimal) }}</th>
                 </tr>
                 </tfoot>
             </table>
diff --git a/templates/user/layout.html.twig b/templates/user/layout.html.twig
index 65f9a6e6..20e7a5a2 100644
--- a/templates/user/layout.html.twig
+++ b/templates/user/layout.html.twig
@@ -1,8 +1,8 @@
 {% extends 'base.html.twig' %}
 {% import "user/actions.html.twig" as actions %}
 
-{% block page_title %}{{ 'profile.title'|trans }}{% endblock %}
-{% block page_subtitle %}{% if not user.alias is empty %}{{ user.alias }} - {% endif %}{{ user.username }}{% endblock %}
+{% block page_title %}{% if not user.alias is empty %}{{ user.alias }}{% else %}{{ user.username }}{% endif %}{% endblock %}
+{% block page_subtitle %}{% if not user.alias is empty %}{{ user.username }}{% endif %}{% endblock %}
 {% block page_actions %}{{ actions.user(user, tab) }}{% endblock %}
 
 {% block main %}
diff --git a/translations/messages.de.xlf b/translations/messages.de.xlf
index cb53eadb..252fa376 100644
--- a/translations/messages.de.xlf
+++ b/translations/messages.de.xlf
@@ -505,6 +505,10 @@
                 <source>label.timesheet.daily_stats</source>
                 <target>Tägliche Statistiken im Timesheet anzeigen</target>
             </trans-unit>
+            <trans-unit id="label.timesheet.export_decimal">
+                <source>label.timesheet.export_decimal</source>
+                <target>Dezimal Format für Export nutzen</target>
+            </trans-unit>
 
             <!--
               User timesheet calendar
diff --git a/translations/messages.en.xlf b/translations/messages.en.xlf
index 293a526b..88870a01 100644
--- a/translations/messages.en.xlf
+++ b/translations/messages.en.xlf
@@ -505,6 +505,10 @@
                 <source>label.timesheet.daily_stats</source>
                 <target>Show daily stats in timesheet</target>
             </trans-unit>
+            <trans-unit id="label.timesheet.export_decimal">
+                <source>label.timesheet.export_decimal</source>
+                <target>Use decimal duration in export</target>
+            </trans-unit>
 
             <!--
               User timesheet calendar