The bug
Magma column particles are misaligned, with only a quarter of the particles actually in the water. The remaining 3/4 block of particles are in the northeast corner (tested twice, two different worlds).
Linked issues
is duplicated by
relates to
Attachments
Comments

Can confirm in 1.17.1.

Can confirm in 21w44a. Clones MC-129645.

Can confirm in 1.18 Pre-release 1.
Can confirm in 1.18.2.
Can confirm in 1.19.2.
Can confirm in 20w51a.