That's true. But if the action is really (badly) destructive, a full fledged confirmation dialog may be useful (we know in some cases we do things mechanically).

Effectively, State var are for this: save state…

Thanks. Don't worry, we all have started as Swift beginners.

Right, don't need it, unless you want to execute the tap once window activated. But then, need a CGEvent (I think you saw this already: https://stackoverflow.com/questions/41908620/how-to-simulate-mouse-click-from-mac-app-to-other-application)

Does it work in manually run mode ?

Where did you see the MacOS 11.5 RTM to download ?

Did you file a bug report ?

Thanks for feedback. Don't forget to close the thread now.

Yes, but I suspect the behaviour is the same. So it is likely not a bug, but a feature of iOS 15.

Ok, my mistake, I should have looked at the tags, not the content of post.

I tried your code, but scale does nothing. And the background is blue, not red.

Instead of have Collection in a cell, why not create a collectionView with multiple sections (one for each former cell).

Is that fully solved now ?

I tested this code (not with a camera view, but a plain UIViewController). shouldChangeCharactersIn is properly. Could you show how you use the class on your camera view ?

UITapGestureRecognizer is not affected by it: I did not try, but I understood from the doc that having set alpha to 0 would do it. Isn't it the case ? Is this the way Swift handles this? : I fear this is the way UIKit (not Swift, would be the same in ObjC) handles it. If you have a more complex form, you should probably anyway define a simple enclosing shape. For instance, enclose in an ellipse.