While creating a modpack for minecraft 1.21.5 with fabric I encounter a small inconvenience when closing a GUI ingame. The mods I tested with are the following:

• Fabric version : 0.16.14
• Auto HUD : 8.4+1.21.5-fabric
• Blur+ : 5.2.1-fabric
• Dynamic Crosshair : 9.4+1.21.5-fabric
• ImmediatelyFast : 1.9.5+1.21.5-fabric

This was tested on RTX 4090 asus TUF OC with i9 13900k. A solution I found which fixes this issue but isn't default configured on is changing the setting hud_batching to false instead of true in the config file of immediatelyfast.

Do I need all of those mods? Try to reduce the mod list to two or three mods, else its difficult to properly debug

Each mod separated works with ImmediatelyFast without any issue. The 3 mods together without ImmediatelyFast also work together without any issue. As soon as you add ImmediatelyFast with all those 3 mods installed it brings up the black screen. Also like I said before it is fixable with changing the setting hud-batching to false. Which I assume has something to do with it then. But you can't reproduce it without this combination of mods.

This issue has been fixed in the latest snapshot build: https://github.com/RaphiMC/ImmediatelyFast/actions/runs/15518680040