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.

I tried but could not reproduce. Could you show the complete code so that we can try to reproduce ?

This seems a partial answer to the question: https://stackoverflow.com/questions/23896803/os-x-detecting-when-front-app-goes-into-fullscreen-mode

You're right, my mistake, it is DecksTableViewController ; I pasted the wrong class. I corrected the post to get it correct. Good continuation.

I do not understand what the question is.

Or just avoid SwiftUI for the time being (even without memory problem, I would do so !). Don't forget to close the thread now, and good luck.

Did this solve the problem ?

Good to read you have a solution. Could you post the complete code for the extension, in case other has similar issue and then close the thread ?

Please show complete code for FirstView and SsecondView. What is the navigation controller ? The firstView ? What do you show when you get to secondView ? There is no interface defined and you say you have not defined in storyboard.

May be opening the project in 12.5 did correct some issue. And then reopening in 13.0 worked ?

Too bad, you don't want to make the extra effort. Why should I ?

Tell if that works. If not, explain what's not working.

Did you try embedding in stack view ?

You somehow closed the thread by marking correct answer… Which was visibly not a solution to the problem.