Also see: topic: “Closing the File (CTRL+W) Does Not Allow Windows to Delete It”
My message from about March 2021:
Hi there, when I close a project in Shotcut, NOT closing Shotcut, and try to delete the files I used in the former closed project from the harddisk, Windows gives a message that the files are still in use by Shotcut. The only workaround is to quit Shotcut and start it again which is annoying.I feel.
Maybe You can solve this problem, thank you!
Not sure, but could be a windows problem. The program that used the file is still open and windows doen’t know if you might need it again in that program - i suppose. But the developers may answer that correctly if its due to SC.