It’s about the added empty space ( the project page caption, scroll bars )
and less information ( at least one additional track is visible, with the project window maximized ).
I need to see as many tracks as possible. With a clear view of the waveform.
( And I already have too much reflective space in front of me,
so bigger displays are no solution … )
Anyway, Your workaround may help some people and Steinberg is recoding the window management
as we speak. So in a few years, plugin AOT on 2nd screen will work as expected.
Jan