I have added a screenshot here, when I toggle test on, all it shows is a new image over my character frame, but nothing else.
https://imgur.com/a/JOyLwx0
I also tried the /console cvar_default command recommended here:
https://www.wowinterface.com/forums/...ad.php?t=58928
It did reset some things, but I still have the same problem.
Something that could be related is TinyToolTip also stopped working, but now it's working again. This appears to be sporadic, like there is something causing addons to not load or not work properly.