Originally Posted by fhub
1) it doesn't know 'newui' anymore, and

it's not compiled anymore by default. you can use the Internal UI which can be opened with TAB, or you can compile MESS with OSD=winui.

Originally Posted by fhub
I can't switch the menubar on/off with <ESC> as in previous versions (can't get this menubar at all now)

Notice that even if you enable the newui by compiling MESS with OSD=winui, this won't work. Menubar toggling is temporarily disabled.