I know that shaders often mess with the built-in shaders for mods, but this is not because of my shaders.

I also did not change anything in its config.

When I have any buffs/debuffs on my character it won't let me see the stars and the lens would go transparent, as if I were looking out through a window.

• WITHOUT DEBUFF
  
• WITH DEBUFF
  

This is on the sevtech ages modpack version SevTech_Ages_3.2.3.zip

Version - astralsorcery-1.12.2-1.10.21.jar

It means something isn't cleanly drawing a UI layer, not a shader issue.

1.12 is no longer under active Dev, however, not that there is much that could be done here with another mod's ui.