The RMB marquee operation has been optimized to suit the API's lack of vertical zoom support capabilities.
Simply scroll your mousewheel while holding down the RMB to set your vertical zoom. This will adjust the yellow square, which upon releasing the RMB will become your new screen position/zoomed area.
v0.8 MIDI display!
v0.86 solo tracks in mixer! (toggle)
v0.9!
In order to move or resize the project map, it cannot be borderless. Simply switch to a bordered window by pressing F12, and you can then move the window and resize!