Default [Q] Problem with Recent App Switcher?

Hello Everyone,
Recently after upgrading to 4.4.4 I'm facing a weird issue.
If I press the Recent Apps button it goes to the recent app just for a second and then it jumps back to the homescreen. When I click the button again nothing happens, but on the third try it works. It happens randomly. And now it's getting so annoying.

I've tried Reboot, Cache Wipe and Switched to ART. Nothing helped.
I'm not Rooted hope you guys have a solution for me.

Best Regards,
Abey