This mod implements a custom crawling animation, so it might be possible to offset or angle the offending limbs such that this coplanar intersection does not occur.

Oof idk. It's such a tiny detail. I certainly wouldn't offset it, since I try to keep the vanilla feel/style of animations, which also don't use offsets at all. Playing with the rotation values probably could get rid of that, but is it really worth it for half a pixel flickering when moved in a specific rotation(especially seeing that vanilla has that all over the place too)?

Yea, I'll make the decision not to fix this. There are mods like Debugify that fit this more.