I'm having a similar issue. I've never used the scroll bars just the magnifying glass, selecting the region first, then using the mg to size the region accordingly. It's now hard to see the bottom of the region after the update, it's like the bottom notes are chopped off. You have to stretch the region vertically first, then move it up to just see the bottom notes. Even then, they just appear sometimes. Not sure if i'm missing a setting or something, but like you, i've noticed it's not easy sizing up your selected notes as it used to be.