I found out while building a windmill that the sideways oriented slabs that [blank] enables become the pink/black checker blocks when the windmill is activated. This isn't the case with Quark's sideways slabs, I just checked, but the redundancy to activate both in 1 game is pretty unfortunate (I don't have Quark's slabs enabled). This could be an issue for [Blank], since it isn't for Quark. I'll post this request there as well just in case. Thanks!

I mixed up a couple mods. Ignore the first mention on Kleeslabs. I'll redo this report, sorry.