I also have this issue for the last couple weeks. Awaiting a real fix and not a uninstall/reinstall an old version fix. If you're (teamviewer) going to enable automatic updates by default, be prepared to quickly roll out a fix when new versions have issues. 2+ weeks to still not have a fix is unacceptible.
Same thing happens to me. Every morning my teamviewer account gets logged out and i have to restart teamviewer to be able to log back in. This is very counter prodictuve when I have to do tech support quickly