Ive see this posted and closed already but it is still happening to me too.
Im on 1.11.2.

I'll be in bed waiting and then I can't leave the bed. The Leave Bed button has no effect and I cannot exit via Esc key or any other way. Only option being to Ctrl+Alt+Del for End Task or to close from the Taskbar.

It happened twice today. Once when a friend left the game (LAN) (while i was in bed) and once when my friend was still in the game. Each time though it seemed to happen while I was in bed waiting for my friend to also get in a bed while they took forever to do so.

....also, i thought this was the official minecraft spot to post bugs, so nevermind. Google lead me here.

This happens without Quark though.

Sorry my bad. I am aware. I didnt mean to post here. Not sure how to delete posts.

just hit the "close issue button" down there somewhere vvvvv
for the record: https://bugs.mojang.com/browse/MC-92216