Open E-Mail with an encypted attachement. Doubleclick attachment "mytestfile.txt.gpg".
-> Window "open attachment" names the attachment as "mytestfile.txt (002).gpg".
When clicking "open" and "save all", I'm asked if I want to save as "mytestfile.txt (002)" or "mytestfile.txt".
I would expect maybe (001) as addition to the name (better: "_001") but not 002.
When I attach the same file to a new mail, " (004)" is suggested.