[Users] Popup Bug

[Shadin A]

I'm using GeoExt2 + Extjs 4.1 now to implement a map application. The thing is sometimes when I select a feature on the map, two popups are displayed. one at the bottom of the screen which has correct info and one empty in the right place. it doesn't go even I close it. I wonder if this is a bug ? 		 	   		  
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