As I was trying to furnish a house, I saw I could not place curtains diagonally. Not Maxis curtains, not CC curtains. I finally figured out it was Ms Barrow's Windowboxes with weeds (TSR) installed on the exterior of the wall preventing the curtains from placing on the interior wall. (link to window box set

Is this an issue with the diagonal mesh vs the straight mesh? Can it be fixed? I know I could just use the Move Objects cheat, but I would rather the window boxes not interfere with curtains.