You can not easily reproduce it. It only happens sometimes and it only happens with queries on collections with kinvey references and it also only happens with the minified version of the kinvey library.
With the much slower non-minified version I didn't encounter any problems, so I guess it is some sort of timing problem.
The current workaround is if it crashes, to use $timeout of 2000 to query again, which has a high chance of working. But even then it might crash again, then I'm asking the user to manually reload.
So this is problem numero uno.
The second problem is, that sometimes when querying a collection with referenced data, kinvey resolves the relations of some entities correct and for some I get the pure reference entry (e.g.):