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In 2.3.3, a ListView with an IList as ItemsSource would have the index referenced upon item selection. In 2.3.4-pre2, selecting a ListView item triggers a call to GetEnumerator() against my IList which virtualizes an infinite list.
I implemented GetEnumerator() and found that the ListView executes MoveNext() once then goes back to using the IList so the impact is minimal. I just had to implement GetEnumerator() where it was not implemented before.
Thank you for filing this report!
Are you implementing your own IList to use as the ItemSource? Can you attach a sample project that reproduces this issue?
Cannot reproduce in OOB project. Will revisit if I can find the right mixture of components from my project to reproduce. Thanks.