Glass Texture Issue in 1.21.1

[mewlettucea]

Hello! I've just encountered an issue with glass textures in the 3.0.0 version of Continuity for 1.21.1. Textures from the other glass panes are showing up when I place regular glass panes (shown below):

When I place the stained-glass pane variants, they have proper connected textures (shown below):

This also occurs with the regular glass block (and the stained-glass versions are properly connected). This occurs with and without shaders and fixes itself if I uninstall Continuity and install Fusion (which is another connected texture mod my texture pack allows, but Continuity works far better). It also persists regardless of the built-in Continuity texture packs used (this is how I have them currently layered, though):

I'm starting to think that perhaps it's the texture pack (Yuushya) itself as opposed to anything Continuity is doing, given that everything else works perfectly with Continuity, but I wanted to ask here first. I also have the log: https://mclo.gs/q43tM0z.

Thank you for reading. This is my first time submitting a bug report, so I apologize if I haven't provided enough information or if this ends up being an issue not with Continuity.