MIDI Draw height problem in piano roll

Hi,

I often do this sequence in my workflow:

select a region, open the piano roll (cmd+6), open the MIDI Draw (cmd+Y), work on that for a while and then close the piano roll (cmd+W).

When I open any piano roll window again, the height of the MIDI Draw area is expanded to the maximum, so I have to adjust it manually every time.

Is this happening to anybody else? Any ideas?

I'm using Logic Pro X 10.2.2.

Thanks

Filippo