Since the upgrade, I've been having multiple issues, particularly with plug-ins within the admin panel. For example, when trying to deactivate certain plug-ins, it says plug-in deactivated but sometimes it will still show active (never had this issue before 3.8). Also, within UpdraftPlus plug-in settings, when I try to change the schedule interval of my back-up, it says settings saved, but then it doesn't actually show the new settings.
Hopefully 3.8 fixes these bugs soon!