User settings allows us to “Pick a default dashboard for this device.” However - the selection doesn’t stick - sometimes it works, more often the Overview dashboard is displayed. Also the dashboards previously hidden from the sidebar reappear after logging out and back in. There was a change made to the login screen and process (related to security?) many months ago (sorry, I can’t identify when), the problem started after that change.
I’ve recently encountered the same issue with the Overview dashboard coming up instead of the default. It started right after I made some changes to the Overview dashboard.