On a multiplayer server, water seems to not exist. Falling into water does no damage, but when trying to swim up, you only jump up one block as if you were on land. Cannot 'swim' (sprint) underwater either.
MCPE-33221
Can't Swim in Water
Resolved
Invalid
0
Thank you for your report!
However, this issue has been closed as Invalid.
Unfortunately we don't accept issues related to External Servers here on the bug tracker, but please add more details if you think this also affects multiplayer over Realms, LAN, or XBL.
I'd suggest contacting the server owner directly or seeking help on the Minecraft forums.
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