Home key damage while replacing middle frame

Hey guys

I got the middle housing of my note 2 (model N7100) replaced and then I noticed that the home key (physical) and menu key (capacitive) are doing the same function... they both are functioning as a menu key. And I have no key that functions as a menu key.

The home key is also giving a haptic feedback on pressing which it never used to give before.

I must have damaged something while removing the middle frame.

Any ideas guys?