Logged out in nether in 1.16 pre 1 logged back into world in 1.16 pre 2 and was in overworld instead. Tried to use portal to go back to the nether and game crashed.

Created new world in 1.16 pre 1. Went to nether through portal. Logged out. Loaded world in 1.16 pre 2 and was no longer in the nether where I logged out but was in over world about 300 blocks from my original portal. Tried to use the same portal and the game crashed. Repeated several times to make sure.