That cutscene fadeout is annoying, there's not much in Construct 3 that I can see that will prevent it, and having a tap to proceed button mucks up all the music timings. If I did it again, that's how I would do it. Having said that, I'm trying something now on Android to see if that will fix it.
The Apple notch thing is interesting. I didn't even know about that till you mentioned it as I'm not an Apple user. I have no idea what I need to do to get that working, guess I'll go do some reading.
Regarding the icons, yeah, I haven't gotten to that yet. Apple uses weird resolutions for its icons (who'd have guessed) so I need to make up a new batch.