Im playing on the BetterMc 1.21.1 Fabric modpack with a couple other mods, and i noticed that the glass pane texture is not merging for any of its variants. additionally i cannot see the usual 2 texture packs in my resource pack folder - the normal glass texture works as normal however and it is connected

Diagonal Windows replaces the vanilla glass pane blocks with its own blocks and Continuity's Default Connected Textures builtin resource pack only applies connected textures to the vanilla blocks. You can copy and modify the pack files to work with Diagonal Windows' blocks.

I've just uninstalled the mod as i haven't used it whatsoever, and they now work !! thank you very much for your help :)

Do you have the Diagonal Windows mod installed?

Do you have the Diagonal Windows mod installed?

yeah i do, i think it came with the modpack

Diagonal Windows replaces the vanilla glass pane blocks with its own blocks and Continuity's Default Connected Textures builtin resource pack only applies connected textures to the vanilla blocks. You can copy and modify the pack files to work with Diagonal Windows' blocks.