This is configured with a letsencrypt publicly trusted cert. Certs are the same on the Gateway/IIS...I don't seem to receive any cert errors..
It appears that if I am in an HTML5 RDP/RemoteApp session, if there's too much being processed at once, it will disconnect the RDP session entirely, and the user will be forced to log back in, the only error it produces from the UI is:
Oops, we couldn't connect to "Work Resources"
Your session ended because of an error. If this keeps happening, ask your admin or tech support for help.
If opening a web developer console, I also get an error, which I will attach a screenshot.