Absolutely, I have a handful of machines that logout every time the browser closes (Chrome), and preferences would never open regardless of browser. All extensions removed, cookie prefs confirmed, no delta.
For a while I believed it was a conflict when the binary version is installed. I uninstalled it, uninstalled the extension, reinstalled the extension, and not the binary. For a while it worked, and then stopped...
I gave up trying to deploy it to users. It's too annoying and they won't tolerate the inconvenience, and I gather they've raised prices again. Can't see renewing this cycle if there isn't a fix.
Support didn't have anything actionable on my ticket.