There were 3 things that I observed after leaving the end dimension.

A.) Cannot pick up mined blocks in survival

B.) Cannot enter a bed (visually) and further attempts to enter it will return a "Bed is occupied" message.

C.) Leaving the end dimension via the exit portal will teleport you to to the last coordinate you set your spawnpoint with a bed, regardless of whether or not that said bed is obstructed/destroyed or not.

Steps to reproduce:

1) Enter the end dimension via an activated end portal in survival.

2) Leave the end via the exit portal.

3a) Mine stone with a pickaxe (the cobble will not be picked up)

3b) Try to enter a bed during the night ("Respawn point set" will appear but you aren't in the bed and consecutive clicks on the bed will return a "Bed is occupied" message)