The navigation bar is very difficult to use, especially on a laptop with a trackpad. The current implementation has the navigation bar collapsing and disappearing from view if the mouse moves lower than the nav bar bottom. When you have a 16:9 screen and a track pad, it is very difficult to keep the mouse within the nav bar boundaries. I am frequently finding that I stray slightly lower than the nav bar when I am moving the mouse from the left of the screen to the right to locate the appropriate section. If I stray below the nav bar, it disappears and I have to start again by clicking the appropriate dropdown.

Please change the behavior so that the collapse behavior is either deliberate (clicking the drop arrow a second time, or somewhere else on the view or form), or at least put a timer on it and have the nav bar remain open for a few seconds to allow the user to select the appropriate button (or the next-chunk arrow).