We can't sleep properly anymore in multiplayer in 1.14 anymore.
Usually, when we all play on a survival minecraft vanilla server and that we want to sleep in order to let the night pass, we say "sleep or log out", which means that those who can't sleep will log out so that all players online sleeping make the night be passed away.
But now it doesn't happen that way. We got in bed, and then the players who couldn't sleep logged out, but the night didn't pass.
When I pressed tab to see the players that were still on the server, I saw that the players who logged out were still there for the game. I could tab them. As such, I think it is because of this that we can't sleep properly.
We tried to get out of our beds and get in it after the players who couldn't sleep logged out, and it worked fine.
For so, maybe the problem is that the players' list is not actualised while some players are in bed.
****
Duplicate of MC-145265