The current implementation of PulseView doesn't propose a default filename when a user tries to save a session or session's setup.
If a user is not aware of the extension he is supposed to use, it has no way to find it easily.
E.g.
I.e. .sr is not mentioned as an extension anywhere in the dialog.
The change gives a user a default file name with extension, which should minimize confusion.
E.g.:
Hello,
The current implementation of PulseView doesn't propose a default filename when a user tries to save a session or session's setup. If a user is not aware of the extension he is supposed to use, it has no way to find it easily. E.g.
I.e. 
.sris not mentioned as an extension anywhere in the dialog. The change gives a user a default file name with extension, which should minimize confusion. E.g.: