In my project I use collection-repeat + infinite-scroll,and dynamic set item-height, when infinite-scroll finished loading, then screen shake and splash, after that the scroll position before I scroll has changed, I can not see the same items after infinite-scroll finished loading. I find if all the item is the same height,then It is OK.
I refer to follow to make this project,using it's source code to change. ref: http://gonehybrid.com/how-to-group-items-in-ionics-collection-repeat/
bug video: https://forum.ionicframework.com/t/collection-repeat-splash-screen-bug-help-me/47704