One would expect to be instantly put into swimming mode upon teleportation, given the player would be able to fit in such a space with no ill effects, however this is not the case.
MC-130572
Using an ender pearl to teleport into a one-block-high area with water in it will cause the player's head to become stuck in a block
Resolved
Fixed
5
muzikbike
(Unassigned)
Confirmed
(Unassigned)
Minecraft 18w22c, Minecraft 1.13-pre1, Minecraft 1.13-pre2, Minecraft 1.13-pre3, Minecraft 1.13-pre4, ..., Minecraft 1.13.2-pre2, Minecraft 18w43b, Minecraft 19w12b, Minecraft 19w13a, Minecraft 19w13b
Minecraft 19w14a
Retrieved
Can confirm for 1.13-pre4.