I am trying to make an electrical map for my house, showing which outlet/light/etc. is on which breaker. I made a floor plan and downloaded the US electrical symbols from the Sweet Home 3D website and imported them... but I can't see how to rotate them so for example the outlet symbol aligns with the wall. I can flip horizontal or vertical, but when I grab the rotate corner and rotate the box (or edit the angle by double-clicking on the symbol), the box rotates and the symbol stays in the same orientation.

If it matters: I'm running Linux, using the Flatpak (version 7.1).