Describe the bug
I build a simple structure, add a variety of simplylight lights, save the structure using a structure block, and then load the structure back in the game with a 90 degree rotation. Several of the simplylight lights do not rotate correctly. The panel light which was on the wall is perpendicular to the wall for example. The rod lights and edge lights also have this problem.

Screenshots
I have attached unrotated and rotated screenshots.

Minecraft version 1.20.1, forge 47.1.46
simplylight is the only mod loaded. I also saw this with forge 47.1.3

This is important to me because when my structures are generated automatically at world generation, they will sometimes be rotated.

I think i might know what the problem is, ill have to fiddle a bit, ive never touched structures lol.

The vanilla Minecraft button rotates correctly. I don't know what aspect of a button makes it work.

ya, ive got it mostly nailed down, got most of the lights that can rotate rotating properly now, the edge lights i gotta special case, because they do not actually rotate, they have 4 sides that are turned on or off.

Fixed in 1.4.6 95fe908