Given how many different issues there was with the 1.2.2.2 amongst different I believe this is also connected on this update. Clean install is exactly how you described. First you uninstall from the control panel and then install the product again normally. After installing restart your computer and run the updater without experimental update. Hopefully this helps. If the issue continues after a clean install or reappears after the next update get in touch again and we'll have a look.