Open the mixconsole and then add “Zoom” in the tool bar. You will see something strange or new, and if new not said by Helge. A number appear between width and high icon, if let the mouse cursor on it, a tool tip appears showing “SetNumberOfTrack”, it’s look like a display for test left by the developpers …
For most other people, it´s a simple and fast way, to determine how many tracks they want to have shown in the mix console, by simply typing in the number.