Occurred in Multiplayer

Upon exiting a boat, the player ends up below the boat itself. This occurred whilst exiting a boat on land, and caused suffocation inside the blocks below. the boat above prevents the player being able to exit. The room in which it happened had a 2 high ceiling, but the same continues to happen regardless of roof height.

Also, exiting a boat within a 1 1/2 block gap glitches the player into the block adjacent block to the one the boat rests on the boat, preventing the player being able to crouch out unless they can remove the slab above or the block below

Probably irrelevant, but this occurred in the nether.