IE 8/9 check box in grid can't unselect

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   IE 8/9 check box in grid can't unselect

   
   

   
   

   IE 8/9 check box in grid can't unselect

   
   
   
   

   
   

   A fiddle is available here: http://ift.tt/126Q0df .
   

   Check box's in grids can be selected but not un-selected in IE 8 and 9 for Sencha 5.0.1.

   
   

   I did notice there was another bug that was fixed in http://ift.tt/1IaSuZ4 . Perhaps it's working in the beta?

   
   

   
   

   
   

   
   

   
   

   
   
   
   

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IE 8/9 check box in grid can't unselect