Session Browser - Auto Refresh issue

Well, I can reproduce something.

I never got Toad to hang if I just left Session Browser open/refreshing at a 5 second interval, but I can easily get it to get "behind" if I quickly click from one session to another on the left. The right hand side wants to run SQL for everything I've clicked on. For me it always eventually finished, but maybe these things are related. As far as I can tell, the left-hand-side refresh timer only restarts when the prior run is finished (including formatting).

Do you have access to version 17.0? I can put a change in for next beta, but you'll only be able to run/test the beta if the latest version (currently 17.0) is also installed. New betas are released each Monday and you can get them here.