I have Version 2.8.4. I can load the survey in Connect and open the XLSForm. When I do some updates to the form it saves them OK but when press Update XLSForm it goes into a spiral forever and only way to recover is to get out of Connect. The opened survey does not show the updates but the XLS Form does...Have tried getting out, shutting down, turning back on machine, etc. etc. There is a disconnect somewhere. I am logged on ArcGIS through 123 Connect.
PS: I don't think I had this problem a few months ago.