When I play Minecraft with my brother, I sometimes take the 2nd screen, or the split screen or my brother takes it. Lets assume I take it. I die. The world then sometimes says generating world but it doesn't load. My brother has to relog to get it working again. But my brother has no problems, when he dies, he just spawns regularly. 

Note: This is in a regular world, not a realm and when you reproduce it, it sometimes happens but sometimes doesn't.