The bug
Normally spawn eggs can be right-clicked in water to spawn mobs, even when you're in the water yourself. However, I tried right-clicking bubble columns to spawn the mobs inside of them, but it didn't work.
I tested this with waterlogged blocks too, or just blocks like sea grass. Right clicking the blocks themselves works like normal, but right clicking the water the block itself is in doesn't work.
Affected blocks
General waterlogged blocks(E.g. slabs, trapdoors, glow lichens... etc.)
Kelp
Kelp plant
Seagrass
Tall seagrass
Bubble column
Linked issues
is duplicated by 1
relates to 3
Attachments
Comments 15
Confirmed for 1.13-pre8
Confirmed for 1.13
Confirmed for 18w30b
Confirmed for 18w31a

Can confirm in 21w07a
Can confirm in 1.16.5 and 21w10a. Video attached.
Can confirm in 1.18.1 and 22w05a.
Can confirm in 1.19.2.

still broken. can version be updated please. Also title should be changed to about bubble columns.
Confirmed for 1.13-pre7