problems with back button in nexus 4

[srikanth554]

Hii
After update of KitKat my nexus 4 back button is Opening all the previously opened applications...is this happening for any one else???

 

[acejavelin]

Hii
After update of KitKat my nexus 4 back button is Opening all the previously opened applications...is this happening for any one else???

This sounds like either a bad screen (recognizing touches in the wrong spot) or a bad flash... I would unlock and flash the stock image and see if the problem continues.