What is your operating system?
Windows 10 20H2 x64
Windows 10 21H1 x64
… and a few earlier releases
What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
21.05.18 x64 portable
… and all prior versions going back ~2 years
Can you repeat the problem? If so, what are the steps?
I realize this could be a Windows issue, not necessarily a SC issue. But, perhaps, something can be done in SC to alleviate the issue.
I use SC for restoration of second-source material. It could be digitization of film, tape, analog capture, etc. Sometimes, it’s cheap camera, bad cell phone white balance, exposure, lighting, sound, etc. If I think the export of my SC edit is “better” than the original, I’m not opposed to deleting the original.
That’s where the problem happens. Occasionally, Windows Explorer complains it can’t delete the original file because it is in use by another process. I’ve resorted to file handle un-locking tools to explain (always shotcut.exe process) and to force-close the file handle to delete the source file.
Work-arounds are a re-boot. Sometimes, but not always, Task Manager to kill the explorer.exe processes and re-launch it. Recently, it’s been happening not long after rebooting.
Either SC isn’t thoroughly releasing file handles, or Windows Explorer is missing the release event. Either way, it’s a pain.