I have a switched outlet which, when turned on, reads as correctly wired on one of the three-light plug-in testers.
When turned off, however, I get it weakly lighting as "hot and ground reversed".
I haven't taken a proper meter to it yet, but I am hoping this is just an annoying trickle of back-current/induced current from another circuit... Or perhaps a switch installed in neutral rather than the hot side.
Has anyone seen this particular nuisance before, and if so what's the likely cause?