Hi, > Looks like you've found a way to detect that someone set sort=null without > calling refresh, which is good, but it seems like the ListCollectionView > is in an unsupported state at this point. I think the state is OK, and IMO you should be able to continue to add or remove items before calling refresh.
One niggle is perhaps when a item is added and would of been filtered via the old filter it shouldn't be added to the internal index. But I can't think of anywhere where this may cause a real issue and a call to refresh should fix it. I'll add a few tests to check this. > I'm just worried that there are other errors waiting to be found when in this > state. Is possible I guess, but this does fix a number of existing bugs, including where the current code would RTE. And may of fixed some some of the duplicate issues I think. I still need to run (and create) a few more tests to be 100% sure. 27 new tests pass, 4 of those were failing in 4.9.1/4.10. Thanks, Justin
