We've been using it at https://starthq.com for about 6 months and I have to agree. Angular is so hard that even the core committers sometimes struggle to keep it together.
IE8 is a second class citizen in Angular and Angular UI, so some things that should work, don't. We've spent a fair amount of time patching it up and trying to get our patches merged into master. Here's a list of things we fixed: https://gist.github.com/olegp/f564ad1a17cadf269d44
I gave a talk recently on our experience with some tips that may be of interest, here's a link to the slides: https://docs.google.com/presentation/d/13_tqIGJYJo7CxLvgZlUQ...
If this comment gets enough upvotes, I can upload a slidecast with the audio as well ;)
On unrelated note: Are there any web apps out there for creating slidecasts apart from Slideshare?