Hi, I know it's an old bug and I thought it was fixed in the latest Geckolib versions ( thats why i moved from 1.18 to 1.20 MC) But in some cases animations are still not playing when using shaders. I guess it depends on the direction of the light and shadows :(
(example: Unicorn from DragN's Livestock Overhaul)
geckolib-forge-1.20.1-4.7

Does it happen with entities from any other mod?

Is there any way to fix it?
The author claims he can't fix the animation problems on his end :(

I mean I can't fix their code

I haven't seen anything here that indicated that this is GeckoLib's issue

The animations are working perfectly fine, as evidenced by the video. The issue here is their predication of whether it should be moving or not, which is their code, not GeckoLib's

Have a look while the entity is moving - it's still playing the idle animation. Their code to check if the entity is moving is failing.

Idle animations were working on 1.18 mc too, but movement animation were buggy. For example from Critters and Companions on 1.18.2 vers. Another strange thing was that all the entities nearby copied the state of the main entity that was load first. i.e. if the main ferret is sitting, all the others also froze in the same position ( on the video) And now it's the same bug but only with few entities on 1.20.1 from DragN's Livestock Overhaul.

Yes, which is the bug that was fixed in newer versions

The issue you've shown me so far is a completely different one however

well, these entities have this issue too on 1.20.1 >_<
and only without shadows it works fine

Show your modlist

sure

But I don't think it's caused by another mod. I tested it by removing almost all mods, but the problem remains.

Does this only happen to the unicorns? or other things too?

This definitely was fixed, so it's interesting

Unicorns, llamas, rabits have animation bug. Horses, mules , cows, pigs, goats, sheeps, oxes, camels and caribou seem to be good,. But others have animation issues which can only be fixed by disabling entity shadows. I think it depends on the direction of the light, when they move in the other direction animation can start working properly, but later it's buggy again.

like this

yes, from DragN's Livestock Overhaul

What interests me here is that the idle animation works perfectly fine, it's the walk animation specifically that doesn't

That leads me to believe it's not an animation issue generally, but specifically with moving.

Are all these entities from the same mod?

Yeah this looks like a them problem

They're doing some sort off weird calculation for their movement check

No, I didn't see that