Columns in grid not resizing when i resize header

1. 
   

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2. 
   
   
   

   
   

   
   

   Columns in grid not resizing when i resize header

   
   

   
   

   Columns in grid not resizing when i resize header

   
   
   
   

   
   

   In a grid panel I need the column header to be of 36px. So instead of giving the columns configuration as an array of columns I gave following in the grid configuration as
   
   {
   
   columns:{
   
   height: 36,
   
   items: [
   
   ......
   
   ]
   
   }
   
   }
   
   Then when I try to resize the columns by pulling the splitter only the header resizes whereas the grid columns remain the same.
   

   Please find the filddle at http://ift.tt/1vA4NVW

   
   

   Thanks

   
   

   
   

   
   

   
   

   
   

   
   
   
   

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