Differences in behaviour of appearance event API between platforms

[asherLZR]

Good day,

We are using 7.30.2 of RNN and are trying to understand a few things about the appearance event API.

On Android, when a new Activity is opened on top of 2 existing React views (e.g. stack -> modal -> [new activity]) with a native Intent, ComponentDidDisappear is emitted for both views (modal -> stack). Similarly, when this activity is closed, ComponentWillAppear is emitted (modal -> stack).

On iOS on the other hand, no ComponentDidDisappear or ComponentWillAppear events are emitted when a ViewController appears/disappears.

1. For Android, is the order of the event (modal then stack) guaranteed?
2. For Android, is having both views emit events intended (rather than in this case, only the top most modal)?
3. Are the differences between Android and iOS behaviours expected?

Best regards,
Asher