Tried to save an attachment of an email from Thunderbird to and network Samba
share on another system also running Leap42.2. The attempt fails with the
message - "You can only select local files"

Saving the attachment to the local file system, then dragging and dropping the
file, using Dolphin, to the network Samba share works just fine. This is both
inconsistent and unexpected behavior.

I noted this issue has been reported in the past, and recorded as fixed.
Apparently not or this bug has resurfaced....