With any rune effect on a piece of armor, or an item displayed such as an enchanted sword in an item frame, the enchantment shine will suddenly disappear when looking at a block of any type. This does not happen with regular enchanted items that have not had a rune used with them. This effect also doesn't work when looking at your character model in the inventory screen or in third person with the armor on, but the shine does stay normally if you hold an enchanted item in your inventory and look at a block.

Going to need some images of this.

These show some (very brightly) colored items with runes. When I hover over the block behind them, the enchantment shine goes away entirely, and then the one with no HUD shows that when the block selection box is gone with f1 pressed, the enchantment shines return.

Do you have any other mods that affect rendering?

This is when only running Quark and it's dependencies, with up to date java and forge, along with the newest version of Quark

Issue can be closed, not reproducible in 1.16.5 r2.4-311