Allow '.asc' files to be downloaded using Tor browser (PGP ascii)

Using Tor browser for Android, one cannot download a '.asc' file by long-pressing it. The signature instead loads in a browser window. No helpful.

This might be the behaviour for Firefox but I expect better from Tor Browser frankly. In my experience copying ascii pgp from the browser introduces newline characters that break the signature.

Is there a temporary workaround for this in a config file? I would prefer the default behaviour for this text file to be "Save" but Save is not even an option.

Trac:
Username: torlove