A suggestion about filenames and file saving.

[DesNnochiri]

The File, Save dialog defaults to a short filename that seems to follow Old School Windows or even MS-DOS naming conventions. This happens even if you select a phrase in the document for the filename.
This is frustrating, in the age of long filenames -- and for users/organizations that need to distinguish between documents or versions of documents having similar names or subject matter.

[miguel-c]

For me, it defaults to the first few words of the 1st sentence and not to something I have previously selected.
Can you please send some screenshots and steps?