camera bug still in 1.14

i've tried playing it in fullscreen mode, but no effect. i forgot to mention in my previous post that i am playing on linux mint as well, not on windows. Just to repeat, the bug is that when i move left or right, the mouse  go up and down or right when i move left.

 

sorry if more people have posted about the same problem, but this bug is really annoying me.

hope you can fix it

 

-Starcomet