Version Info

• Minecraft, 1.21.1
• Fusion, 1.2.7

What mod loader are you using?: Fabric

Are you using OptiFine: no

Description of the Bug
I use vertical connected mode to create a special texture if there is snow on the leaves
and the block I modified is the leaf
and this is what should happen

but if you go to the east and look west
the top block that should use tiles 1 instead uses tiles 3

after I traced the problem there was when I did a mirror on the east uv and also happened to the west uv if I did a mirror too
but it didn't happen to the south and north uv

some other problems that may stem from the same problem
These 2 bugs occur in minecraft version 1.21 and 1.21.1
I tried in version 1.20.x with the same fusion version and the bug did not appear

I do not fully understand what the issue is. Could you share a simple resource pack example which runs into the issue and explain what the correct result should be?

I also fixed a number of issues in Fusion version 1.2.8. Could you check if that perhaps also fixed the issues you were running into?

testFaceBug.zip
This is the resource pack file for the issue in the first image, not the last two additional images.
There are resource packs that have bugs and resource packs that have been manipulated to function.
I'm using version 1.2.8 Fusion and Minecraft Fabric 1.20.2.
The only other additional mods are the menu mods.

The issue should be fixed now in version 1.2.9 of Fusion. Thank you for reporting the issue!
Could you create separate issues for the other problems you were encountering if those are still relevant?