AE delete selected layers/keyframes

I have this annoying problem/bug for a long time (4-5 month). I thought that it's just a bug which will be fixed with the new release of AE...but... no. Could please someone help me to solve it somehow?

Problem:

When layer selected (or it works with selected keyframes as well) any shortcut/button can delete this selected layer/keyframe. Just ANY button (p, s, backspace, a, t, 0, etc.)! I use shortcuts A LOT and this bug freaking me out! Usually, I just do "ctrl+z" for a few times and deleted layer comes back, but seriously...Adobe.. it should not be like this! 

This bug appears not with every time I use a shortcut, but from time to time (1 time per 5-10 minutes and sometimes more often, sometimes less).

What I tried for solving this bug?

- Reset all preferences to default

- Re-installing AE 

- Even re-installing Windows! 

I have 1 work PC and one home PС and this appears on both machines. 

Windows 10 Pro 64bit 

i7-6800k 

64gb RAM

GTX-970

Does anybody have the same problem?