- Random invisible touches and phone calls - BUggy Glass UI - Stupid battery management ..to say the least.
That's in addition to so many dropped frames in the animations that I disabled as many as I could because it was driving me crazy, and to a bunch of word-based buttons becoming confusing icons. I think this has topped 7 for my least-favorite iOS release, and the gap widens by the day. It's terrible.
[EDIT] What it most reminds me of (I was on early Android and have done even more development work on Android over the years than I have for iOS) is Android. The jank, the pile of little confusing UI choices that all add up into an overall off-putting experience. The uncertainty what kind of bad thing might happen when you touch anything. Feels like an above-average 3rd party Android skin, like from Samsung or someone (so, pretty bad). The stuttering animations. No other iOS release has ever felt like Android to me.