Odd transparency effect on entire world

[piercecardin]

Hi there!

Whilst playing on the latest version, I noticed that turning on the screens would cause this odd "transparency" effect on everything around me.
here is a screenshot:

and here is a video (not by me) that seems to be a similar situation:
https://www.reddit.com/r/feedthebeast/comments/cbtb9a/glass_mod_is_not_working_properly/

I am not using optifine, though I do have foamfix.

Forgive me if I have left anything out, and thank you in advance for the help.