Atleast in my modpack, this mod making strange graphic bug. Fixed after restart. I have no idea why this happened or what it caused. Yea, i suggest it caused by incompatibility of some mods in the modpack.
Screenshot: https://steamcommunity.com/sharedfiles/filedetails/?id=3549700600&fileuploadsuccess=1 (Had to upload it manually cus couldn't make it by steam for some reason)
Modlist: https://steamcommunity.com/sharedfiles/filedetails?id=3549706674
To replicate: build a new floor from the mod
I have installed prepatcher as it should.