Running latest beta: 12.2.3 x64.
I tried to search with the Utility Panel Find, arguments: search inside subfolders, filter for "tags match Category" and "type match folders". After some point, when the process reaches a subfolder with a single .mp4 file, the search progress comes to a halt and the panel keeps displaying the name of that folder. Trying to stop the search is not possible, clicking the button does nothing and the panel can not be closed also. Using "File > Exit D. Opus" is possible, but only the lister is closed, the process keeps running.
Before trying that search, I made a search on the same folder with the arguments: search inside subfolders, filter for "name match tema" and "type match folders". This one finished as expected. From this I expect that the cause of the problem with the search for tags is the way that Opus is handling the .mp4 file.
I am sending that .mp4 file to you as an attachment. Please, try to reproduce the problem.
MP4.zip (11.2 MB)