Can confirm in 1.18 Release Candidate 3
Still in Minecraft 1.18 RC-3
Affects 1.18 Pre-6
Not really an issue for all the cats, just the Tuxedo, as its legs top faces have a white texture.
Not sure if I didn't explain this good enough to not recieve a response or something but obviously this is super circumstantial and doesn't really matter to be fixed.
I just tested something.
I created two worlds, both the same: A void world.
I then on one world, made a fill platform to stand on at 0 45 0. When breaking blocks I lagged like in all the examples.
On the second world, I did the same but farther away. No lag. I then filled a platform at 0 45 0 and tried breaking and placing a block. No lag.
There has to be something else going on here than "lighting updates"
But why does it only happen around X0 Z0? It doesn't happen anywhere else?
I don't believe so as that posts labels the issue in 1.13, while this bug here does not. Technically, this is a full block, and should have its lighting affected the same, but the collision is like, a pixel lower or something. But anyway, I was showing that this wasn't an issue in 1.13, so I do believe that this isn't a duplicate of something else.