Player is unable to swim through one-high water with a solid block above

`Confirmed for 18w08b

I seem to be having the same problem @mega xir

The swimming animation is similar to the elytra animation. You can go through 1 high holes when the hole has an extended floor.

Affects 18w09a

Affects 18w10a

Affects 18w10c

Affects 18w11a

One addition to this bug: When you swim in a 1x1 tunnel with glass above and you press space at some point (so you swim upwards), the player will stand up although a block is still above him. Afterwards you can just walk through for example the glass (non-solid blocks).

Confirmed for 18w14a

Affects 18w14b