The bug
When a completely stationary block of lava is viewed through glass, the sides of the texture will appear to be flowing downwards. This does not make much sense, as the block is not at all flowing.
This is also a parity issue, as a still texture is correctly shown in Bedrock Edition.
Note
This is not a duplicate of MC-91333 as it deals with the blocks being viewed from beneath lava, which is slightly different.
Linked issues
relates to
Attachments
Comments


It's quite obviously different, as was detailed in the bug report.

Actually, they're kind of similar
Your bug details how lava looks on the lava-transparent block border from the transparent block side while theirs details how it looks from the lava side, so it's the same thing

Similar does not mean identical.

I still don't believe this is a duplicate as the former ticket requires being under lava to see, whereas this ticket involves observing it outside of lava. Reopen
Can confirm in 20w51a.
Can confirm in 21w05b.
Can confirm in 21w06a.
Can confirm in 21w07a.
Can confirm in 21w08b.
Video attached.
Can confirm in 1.16.5 and 21w08b.
Can confirm in 1.17.1.
Can confirm in 1.18.2.

In 22w15a
Can confirm in 1.19.

In 23w42a

In 1.20.4 and 24w04a
WaI: MC-91333