Minecraft Crashes after pressing Ctrl or Changing sound

If I press ctrl or Fn+arrowleft/Fn+arrowright (This changes my sound) Minecraft minimizes, I see no cursor and I have to do a harsh restart (5 seconds pressing on the power button).

Worst of all, when this happens the current world that I'm in is deleted, and I can't recover it.

I've heard this issue is very old, but still,

s3ND HE1p Ple453