I have a ceiling fan with light in room A. I have recessed lights in room B.
I noticed that if I have the ceiling fan set as Fan-On and Light-Off, and I switch the fan’s wall switch (fan and light is the same switch) to on or off, the recessed lights in room B will blink once.
Room B’s lights do not blink if I have both fan and light set as on or fan is set to off.
Is this a wiring problem? Or is that some special electrical behavior involving a motor? Could this cause problem with device sharing the same circuit?