Hallo, Simon

There are currently 7 in all. Maximising them in turn I find they are:
Classic Tracks View
Bars
Tempo Map
Sysex
Guitar
Mixer
Meter Map
The Mixer is probably my default view. The others I have never actually used. I may have invoked them involuntarily.
And here's the thing: all present with the standard Windows 'x' to close - but they don't close when that is clicked. They just 'park' at the bottom of the screen, just their topbars visible.

Sincerely
Ian G.

Late-developing enthusiast for jazz / blues. Principally pianist