Forge: 40.1.80
Supp: 1.18.2-1.5.5
Moonlight: 1.18.2-1.17.9

No other mods, no shaders.

The GUI for the board does not pop up, I can draw on it using chalk but the UI is not there. I also cannot clear it with a sponge as per the wiki.

I have fixed this however I don't remember if I included said fix with the latest mod update

can you try turning that config ("allow_gui") to false?

Hi! Tried that to no avail :(

Not that I know of. I put Supplementaires on the aforementioned version of forge by itself (with it's dependency) and it's still occurs. But in my main pack Tinkers and things that have their own UI don't seem to have this bug

Do you have optifine?

do you by any chance also arent able to open other mods guis?

hm can you check your configs? I have some options to change their behavior to have the gui on or off. Maybe I have that inverted?

client.toml : https://hastebin.com/quhexupawo.ini
common.toml: https://hastebin.com/ugogejevoh.ini