Trivially avoid drowining by swimming up into a solid block.

[Warr1024]

When underwater, swimming upwards against a ceiling seems to place your head slightly inside the solid node above. The player does not suffocate inside solid nodes, and in fact can replenish oxygen this way. It seems that (1) the player should probably not be able to press his head into a solid node, and (2) if the player could, he shouldn't be able to breathe in there.

[PilzAdam]

This is an engine issue.

[BlockMen]

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