Distorted Scrolling on Addition of Item and Upwards Scroll

[thedillonb]

I've seen this on a few projects and am starting to believe this is an iOS bug. However, if you scroll to the bottom, add a new item, and start scrolling upwards you'll notice that the scroll jumps all over the place.

Steps to reproduce:

1. Scroll to the bottom
2. Hit the "+" for a new item
3. Gently scroll to the top

[smileyborg]

This is likely the same issue with Apple's (buggy) row height estimation that has come up many times, see here for more discussion: #8 If this is the same issue, please do file a radar with Apple so this gets fixed!

Let me know if you don't think this is the same issue and I can investigate more.