Error: App Drawer background goes black
When I open an application through App Drawer of Google Now Launcher and close it after using App drawer comes on the screen. But the background is turned to black. When I go launcher screen and comes back then it will be OK
Also while on App drawer, if I click the recents and close any and come back to the App Drawer then the background goes black.
There is a lag while coming to the Launcher screen from any app.
The phone is rooted.How to fix this. Plz help