Save on save

[Daniel]

All applications (Libre Writer, Pages, Visual Studio Code, TextEdit, 
etc.) I tested save my documents whenever I press ctrl|cmd+S or choose 
Save from the menu. This can be seen, for example, from the modified 
date being updated.

The only exception are MS office (which does not save and not gray out 
the Save menu) and LyX (which does not save but does at least gray out 
the Save menu). Is there a particular reason LyX behaves in this way? Is 
there a way, I can change this behavior and force a save?

Daniel