Prevents 'blinking' tooltips in the rare case where the browser places the tooltip under the cursor (#41624).

Patch by Jens Krämer (user:jkraemer).


git-svn-id: https://svn.redmine.org/redmine/trunk@23172 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/assets/stylesheets/application.css

@@ -1697,6 +1697,7 @@ td.gantt_selected_column .gantt_hdr,.gantt_selected_column_container {
   border: 0;
   box-shadow: none;
   white-space: pre-wrap;
+  pointer-events: none;
 }
 
 /***** SVG Icons *****/