I was testing out 1.3’s file viewer. I have a number of duplicate files. Ctrl clicked to select the ones I wanted to delete, clicked to delete them, asked to confirm, clicked confirm and it looked like the files are delete, but the screen comes back with the same file names selected. So if you click delete again, you delete the files that were not duplicates. After delete, the file manager should return to the file display. Works ok with album delete, but not files.
Bob