glint.png should render as an animated overlay on enchanted or potion-related item textures. It actually renders over the whole inventory slot which makes an odd appearance. It only happens on the main inventory bar, GUI screens don't seem to be affected.
Linked issues
Attachments
Comments 5

I'm not sure, but I think I had a shader activated too (fxaa). It was slot 8 on my side, restarting the game fixed the problem. This would explain a lot. Seems to be a shader-related problem.

After some minutes of playing, it happend again (this time with fxaa activated for sure). Additionally, some other slots changed the background color to be similar to the item in the slot. Strange behavior. Was gone after restarting the game.

Seems to be a dublicate of MC-31669 ... the bug is definitely related to shaders.

Thx.
Seems to affect only the first slot in my screenshot... Why? Is it a quirk with the particular filter I'm using (the "blobs" one)?