If I understand you correctly, then yes. I’m on my phone and can’t screenshot it at the moment. So please forgive my rough explanation.
Go to PLAY > move the mouse over the divider between tracks/lanes and just to the left of the track name, and left of the arrow which expands the track. This is an empty area. When you click the dividers in this empty area you can drag the them to expand the viewable area of the piano roll. It’s very rough right now, but this seems to be one of the next things they will improve on. So with a bit of patience it should get easier soon. either way that should get you what you want for now.
I’ll try to post a screenshot when I can.