5.1.0 Tab click doesn't activate tab with classic theme - Firefox

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   5.1.0 Tab click doesn't activate tab with classic theme - Firefox

   
   

   
   

   5.1.0 Tab click doesn't activate tab with classic theme - Firefox

   
   
   
   

   
   

   ExtJS 5.1.0
   
   Firefox 34.0
   
   Classic theme
   

   When clicking on a tab title, the first click does not activate the tab. Instead it seems to select the text of the tab, only a 2nd click activates the tab.

   
   

   This is visible in all Kitchen Sink tab examples, for example:
   
   http://ift.tt/1Cxl1Hh

   
   

   Tab functionality works correctly in IE or with other themes, it is only present in Firefox. The same example works correctly in 5.0.1, therefore bug was introduced in 5.1.0.

   
   

   
   

   
   

   
   

   
   

   
   
   
   

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5.1.0 Tab click doesn't activate tab with classic theme - Firefox