This is for interfaces: https://bugs.freepascal.org/view.php?id=32919, the same is true for TCollectionItem.
Why is TCollectionItem broken?
QuoteWhy is TCollectionItem broken?I don't know. I did not study the issue myself, but I will in the near future.
ThaddyIt ain't broken. Otherwise half the fcl and classes based rtl would not work. The editors are broken.