The attachable item which is  with "minecraft:foil",but without an enchantment, can't show its enchanting glint,because "minecraft:foil" doesn't mean that it could make the "variable.is_enchanted" be true.

I hope this bug will be fixed as soon as possible.

awa

From November 13, 2023, this problem still exists, and it has nothing to do with whether to use the modified shader glsl files of the third party.