I have discovered the cause of this problem myself now.
Strange but true: this error has only manifested itself since the update to version 118.02!
It worked like this: when downloading a zip file (content types: zip Archive (application/zip), the 7-Zip File Manager was opened (see example 1) and the file ended up in the tmp folder.
The 'Action' was marked as: Use 7-Zip File Manager (default)???!!!
BEFORE version 118.02 I NEVER changed anything about this!
Now I have changed that 'action' to:
Save file (see example 2) and as before, a zip file normally ends up in the Downloads folder now.
Weird but true!
