With upgrade, every time I open a message, all other messages pertaining to it open up, also.
I couldn't figure out what was going on. I'd open a message and instead of just one copy opening, EVERY reply before that one message would open.
See the attached image for an example.
I don't remember ever checking anything because I have no idea where to uncheck it, lol.
Thx for any and all help. This is REALLY annoying, esp because I have to close them all one by one. :(