diff --git a/app/assets/javascripts/app/views/task_widget_tasks.jst.eco b/app/assets/javascripts/app/views/task_widget_tasks.jst.eco
index 3efa71e96..5a4461224 100644
--- a/app/assets/javascripts/app/views/task_widget_tasks.jst.eco
+++ b/app/assets/javascripts/app/views/task_widget_tasks.jst.eco
@@ -4,7 +4,7 @@
       <% if item.task.notify && item.data.iconClass is 'priority': %>
         <%- @Icon('priority-modified-outer-circle', "icon-#{item.data.iconClass}") %>
       <% else: %>
-        <%- @Icon(item.data.iconClass, "icon-#{item.data.iconClass}") %>
+        <%- @Icon(item.data.iconClass) %>
       <% end %>
       <% if item.task.notify && item.data.iconClass is 'priority': %>
         <%- @Icon('priority-modified-inner-circle', "modified-inner-circle icon-#{item.data.iconClass}") %>
diff --git a/app/assets/stylesheets/zammad.css.scss b/app/assets/stylesheets/zammad.css.scss
index dc571ce16..67e33a2f9 100644
--- a/app/assets/stylesheets/zammad.css.scss
+++ b/app/assets/stylesheets/zammad.css.scss
@@ -2116,6 +2116,13 @@ footer {
   .nav-tab-icon .icon.icon-loading {
     animation: rotateplane 1.2s infinite ease-in-out;
     fill: $supergood-color;
+    
+    /*
+      Safari font rendering bugfix while animating
+      http://stackoverflow.com/questions/9733011/safari-changing-font-weights-when-unrelated-animations-are-running
+    */
+    z-index: 60000;
+    position: relative;
   }
 
   .nav-tab-close {