Grouping summary not updated after filter update

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2. 
   
   
   

   
   

   
   

   Grouping summary not updated after filter update

   
   

   
   

   Grouping summary not updated after filter update

   
   
   
   

   
   

   Here's a fiddle with grouping summary and filtering. The grouping summary should update if the filter is updated, but it doesn't. I've also tested with 4.2.3.
   

   http://ift.tt/102OWpN
   
   
   Does anybody know a workaround for this?

   
   

   
   

   
   

   
   

   
   

   
   
   
   

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Grouping summary not updated after filter update