Describe the bug
Breaks the Rendering of minecraft when using Distant Horizons

To Reproduce

1. Installl distant Horizons
2. Install Fancymenu
3. Enable a shader
4. Open inventory

Expected behavior
It to display normally

Fabric 1.21.1
Fancymenu 3.4.0
Screenshots

https://mclo.gs/V4cuRpy
Happens when it registers the inventory screen,
Ignore the errors about cobblemon, its because I just disabled that mod as part of testing to find the culprit.

and I also encountered on neoForge 1.21.1, Fancy menu v3.4.0

Does this also happen with FM 3.3.X?

No, rolling back to 3.3.2 fixed it for me.

@votoka12 so the thumbs down was for what exactly? you can also use words to tell me stuff, ma dude.
@seancrain thanks, will try to fix that! :)

The finger pointing down at me is that that's not happening.

@votoka12 Oh okay, then I misunderstood the reaction.

Could you please try out a debug build for me? Please report if the issue is fixed with it.
Make sure to use it in a copy of your setup, because I removed some stuff from the build and it could break your setup.

The debug build (NeoForge 1.21.4): https://drive.google.com/file/d/1jQ_DUCFjs68XY8dqQxw1Lghy5n1H2JpA/view?usp=sharing

I tried the patch but it still hasn't fixed it. As for the settings, it may not be broken because I only changed a few buttons, in general the error is still there.
Drippy loading screen 3.0.11
fancy menu 3.4.3
neo Forge 1.21.1

I was just about to post an issue about this, but I can confirm it. It also goes away afterwards if you resize the window. I'm on Forge 1.20.1.

Mod List:
Forge 47.3.29
Distant Horizons 2.2.1
Embeddium 0.3.31
FancyMenu 3.4.0
FerriteCore 6.0.1
Konkrete 1.8.0
Melody 1.0.3
ModernFix 5.20.2
Oculus 1.8.0

Update: Identified what's causing the bug.

tbh I have no clue why that happens. I did not mess with the rendering engine.

Update: This only happens when opening the Inventory screen and is probably related to #1045

Great, hope you fix it as soon as possible

Fixed/Added in FancyMenu v3.4.3!