I actually didn't notice the possibility to undock MSFS menus before, but yeah, that doesn't help much if it auto closes again.
So I'm looking forward to be able to leave it open in the next update, thanks!
As for the sudden whish to have this, I think with P3D the menu was just way more decent and "light", one hotkey gave you a subtile choice of options you could quickly access and which didn't disturb the flow too much.
Now, with the overly "designed", gamey, colorful and heavy MSFS menus, for me it just goes a little against the immersion having this big blueish thing popping up. Hence my desire to just get this away from my "flight deck" and store it on my second screen (where other panels, addons, tools and charts etc. are sitting).
Thanks!