The version of Angular currently being used is 1.2.12. There’s been a bug in Angular for almost a year, where $watchCollection doesn’t report oldValues and newValues correctly: https://github.com/angular/angular.js/issues/2621
It was fixed a couple months ago in 1.2.15. Are there any plans to up the Angular version in the next beta? Or, any suggestion on how I can gracefully get the current version of Angular in ionic.bundle.js?