Installed v12.20.3 - at relaunch (after the install) Opus initially did not show the drives in the folder tree (1).
Full exit and relaunch changed that: drives were displayed.(2)
However, something new seems to be that drives are 'highlighted' as recently updated (within 1 hour that is). Within Preferences > Label Assignments I have a setting to mark/add colour to recent files. Highlight them in yellow. This was not the case so far. Also nothing has changed on a number of those drives, not recently that is.

