I can reproduce this in my game. My game was running pretty smoothly before 21w10a, but with the new OpenGL version, my fps dropped at about the 3rd of what I had in 1.16.5, and about half of what I had in the previous 1.17 snapshots.
They are not the same so I dont know what is the good texture, but it would be nice if someone that is doing the game could see this so they can correct it if it is broken (because I am pretty shure this isin't normal). I checked but it happers that it was the same in 1.12.2.
I let only one screenshot so you can see that the textures aren't the same. Observe carefully, you will see. The lines are not at the same place on the stairs.
Can confirm in 1.21.1
Can confirm in 1.21
Can also confirm in 21w14a.
I can confirm in 1.16.1, 1.16.2, 1.16.3, 1.16.4 and 1.16.5.
Can confirm in 21w10a.
Cannot reproduce with AMD Radeon RX 580.
This is supposed to be temporary. Mojang does maintenance pretty often to keep things clean and fast. just wait a few minutes.
I can also confirm with AMD Radeon RX 580.
Cannot reproduce with my setup. I have a hp Omen pc. AMD Radeon RX 580, and Ryzen 5 1400.
I can reproduce this in my game. My game was running pretty smoothly before 21w10a, but with the new OpenGL version, my fps dropped at about the 3rd of what I had in 1.16.5, and about half of what I had in the previous 1.17 snapshots.
Can confirm in 21w10a.
This bug is fixed in 21w10a.
Yes, it is in fact fixed! Really glad to see this bug fixed!
Yes, that's what I am saying it's working as intended on Nvidia Graphics cards.
It is as you wish, because they are reporting the same thing, so only one report is okay in my opinion. Thanks!
I keep this report updated with the new versions and snapshots.
Can confirm it is happening to me as well in 20w45a.
They are not the same so I dont know what is the good texture, but it would be nice if someone that is doing the game could see this so they can correct it if it is broken (because I am pretty shure this isin't normal). I checked but it happers that it was the same in 1.12.2.
I let only one screenshot so you can see that the textures aren't the same. Observe carefully, you will see. The lines are not at the same place on the stairs.