Go in spectator mode, switch to third person, look through glass that is in front water and you see through the water perfectly. Or try it with chests, entities etc.
MC-214104
Many things become transparent when looking in spectator mode in thirt person through my head
Resolved
Duplicate
0
Lukas
(Unassigned)
Unconfirmed
(Unassigned)
21w05b
Retrieved
Duplicate of MC-187783, which is resolved as won’t fix. You can play on fabolous to fix this issue.