Thinva

[ObservableCollection\.ObserveElementProperty\()](https://github.com/runceel/ReactiveProperty/blob/a629332f680781adb1b9f26a1aacba7bc33b58f3/Source/ReactiveProperty.NETStandard/Extensions/ObservableCollectionExtensions.cs#L81) method!! - I want to observe `INotifyPropertyChanged` of elements within the `IObservableCollection`. - This might be related to [`Cysharp/ObservableCollections`](https://github.com/Cysharp/ObservableCollections) rather than [R3](https://github.com/Cysharp/R3). - I'm not troubled by the absence...