This bug happened when we I was playing in my open to lan singleplayer world.I died and when i respawned my friend couldn't see me, also i couldn't destroy any blocks. Sound wasn't working well and skeleton arrows doesn't give me knockback, mobs also does not inflict damage on me, also when i sleep then i cannot get up from the bed. Finally the most buggy part is when my friends disconnects his character remains static in the world and when he recconects happens the same indefinitely

it is not a duplication The static player does not dissapears and could not hit or interact like a ghost identity.