OS: Windows 10 (legit, up-to-date)
Type: Windows .exe installer
SH3D version: 6.6a
Java: 1.8.0_202 (I think this is the included one)

I'm using a wireless Logitech MX Master 2S mouse, but without any specific Logitech software.

Your feature sounds interesting. I did something very similar in Blender using shaders to make walls invisible to the camera depending on the direction the camera was looking at them from. Allowed me to do 3D isometric renders of a room while keeping the lighting correct.