Navigate, Draw & Fill
The Navigate tool in the MIDI editor in BM3 does not function as a navigation tool as in BM2.
In BM2 the navigation tool allows free movement within the edit window without the danger of unwanted note addition. The safest way to do this in BM3 is with two fingers and still if you touch the grid with one finger first you may place a note.
The Draw and Fill tools allow for note placement, Navigation to scroll.
Please consider returning the Navigation tool to its original function.
Additionally, it seems to me that note editing is far easier and more accurate with the tool grid overlay that was present in BM2 versus BM3. An option to bring back the fast, sure, editing of BM2 would be a welcome option. I would imagine it would be the best option also for the iPhone version.