Default texture minecraft:entity/conduit/open_eye causing mipmap to drop from 4 to 3 when using Programmer Art texture pack

I am only getting that message with programmer art, not with default. Does it happen with default for you as well?

Yes it only affect while using Programmer Art texture pack.

The reason it's not with the new default is they already fixed this bug a month or two back, but apparently only fixed the new texture not the old one. Deja Vu!