One of the most annoying problem in Windows "Explorer"
exists also in 7-Zip file manager:
If you copy a large chunk of files and folders, and one of
the files is corrupted or locked and cannot be copied,
the entire copy operation stops, and error message is
displayed.
I would prefer that if an error is occurred during the
copy operation, the copy operation will continue with
the next file, and only after finishing with all files, the
error log will be displayed with all errors that occurred
during the copy operation.
The same thing also for delete operation.
If this bug is fixed, 7-Zip manager will be a great product
for backups.