Someone earlier claimed their entire app was falling apart which I thought was really dramatic hahaha. I have noticed on SOME of my views that the animation will jump forward, backward, and then finish normally. I expect this to be because on the betas things run just a few ticks slower. The animation classes and the browser rendering don’t like to play together. It’s not just Ionic apps, i see it happening in native apps, websites, etc.
I wouldn’t stress it as I doubt the glitches will still be there in the release since they don’t seem to be caused by anything major that has been changed.
For the time being use the emulators and the regular Xcode (6.4 i think now?) and that will get you iOS 8.4 to test things on.
Welcome to the beta world! Just be glad this isn’t as bad as 8 was. When the iOS8 beta came out ALL cordova apps were broken until beta 3. Glad we avoided that this time