Squished Switch Textures when using DHTP Alt 1.3

Not sure if this is the correct place for this; but I'm not sure if its a GZDoom bug or an issue with the Texture packs (or maybe even WadSmoosh?). Please move it if needed.
Basically, when using a HD Texture pack, specifically in this case DHTP 1.3 ALT, it seems there is an issue with certain switches textures being squished. For example:

Or this:

So, one would assume (sw1brcom/sw2brcom or one of its several derivatives) are related this issue, right? But weirdly, if you switch off the Hi-Rez textures via the Options/Graphics/OpenGL/Textures menu, you actually get this switch:

This particular switch type doesn't appear to have its own texture in the standard iwads when I browsed through with SLADE, so the fact that is also doesn't exist in the DHTP is to be expected. So I'm guessing its STONE2 with the transparent switch texture added on top (?). So I'm wondering just what's going on here? Is it pulling in a random substitution for the potentially unrecognised texture and in so doing pulling in one thats too big for the wall, and hence squishing it?
Incidentally, I originally thought SW1BRCOM was too wide and needed cropping, but its that size in the iwads...
I wonder if someone can puzzle this out with me. It doesn't make a huge difference to most wad playthroughs at the moment other than making switches harder to spot, but its strange and frustrating behaviour nonetheless.
Basically, when using a HD Texture pack, specifically in this case DHTP 1.3 ALT, it seems there is an issue with certain switches textures being squished. For example:

Or this:

So, one would assume (sw1brcom/sw2brcom or one of its several derivatives) are related this issue, right? But weirdly, if you switch off the Hi-Rez textures via the Options/Graphics/OpenGL/Textures menu, you actually get this switch:

This particular switch type doesn't appear to have its own texture in the standard iwads when I browsed through with SLADE, so the fact that is also doesn't exist in the DHTP is to be expected. So I'm guessing its STONE2 with the transparent switch texture added on top (?). So I'm wondering just what's going on here? Is it pulling in a random substitution for the potentially unrecognised texture and in so doing pulling in one thats too big for the wall, and hence squishing it?
Incidentally, I originally thought SW1BRCOM was too wide and needed cropping, but its that size in the iwads...
I wonder if someone can puzzle this out with me. It doesn't make a huge difference to most wad playthroughs at the moment other than making switches harder to spot, but its strange and frustrating behaviour nonetheless.