I am using Version 12.1.C2.1761 and have also reinstalled it just to make sure. Also using the preloaded standard catalog.
My issue is that in most of my files when I try to filter any of the items under “Notaion” they won’t turn off. I am also having issues with some of the interior furniture working just fine until I insert a smart view as a drawing and then some of them disapear. I am working with support on this, but thought I would throw it out here also. I am trying all sort of trial and error scenarios to try and figure out how and when it happens. Anyone else experiencing similar issues?