Aspect ratio affects ScrollRect?

Hi,

I recently updated to unity 5.4.0f3 from 5.3.4f1 and shortly after that I noticed that the ScrollRect I used in one of my projects started acting funny.

After experimenting a bit the problem appears to be in canvas settings, namely canvas scaler reference resolution and screen match mode.

I had it set up to 1536x2048 with match width and scale with screen size in previous version of unity and it seemed to work fine. After the update, 16:9 and 16:10 resolutions cause the scrollrect to lose the "smoothness", the scrolling stops immediately after releasing finger from screen as opposed to deceleration over time.

I am working on a mobile game, with portrait-only.

What would be the proper way to handle all aspect ratios in mobile UI, am I doing something wrong?