The bug is the following: We send an invite to a custom game lobby, private or public, and the person gets the invite and hits the check mark for accepting, but then it does nothing. It doesn’t load or try to join or anything. It just does…nothing. It’s not everyone, and different people hosting didn’t seem to matter.
I don’t know what specifically to suggest to anyone, but I’ve had issues where the lobby was empty when using custom/downloaded maps. No slots at all.
I’ve since completely reinstalled both Battle.net and Warcraft III, and things appear to be fixed… so… it’s worth a shot to just try that.
Some files remained in my documents folder after uninstalling Warcraft, so I chose to delete them, to be sure.