This override code is in CocoaDebug+Extensions.swift:

open override var canBecomeFirstResponder: Bool { 
    return true 
}

When requestReview for Apple in iOS 15+, like this:

if (@available(iOS 14.0, *)) {
    UIWindowScene *activeScene;
    NSSet<UIScene *> *scenes = [[UIApplication sharedApplication] connectedScenes];
    for (UIScene *scene in scenes) {
        if ([scene activationState] == UISceneActivationStateForegroundActive) {
            activeScene = (UIWindowScene *)scene;
            break;
        }
    }
    if (activeScene != nil) {
      [SKStoreReviewController requestReviewInScene:activeScene];
    }
} else if (@available(iOS 10.3, *)) {
    [SKStoreReviewController requestReview];
}

For iOS 15+, App can perceive the user's interaction on the Review View and make its window (SkstoreReViewPresentationWindow) keyWindow, while App is not perceived before iOS 15.

So in iOS 15.0+, after Clicking on the Review View, the override code in CocoaDebug would make its Window the FIRST responder after becoming the keyWindow.

That causes the windows below never be a responder, so the screen freezes, because the size of SkstoreReViewPresentationWindow is FULL screen.

At last, I'm curious about the reason of the override code(maybe Prevent users from careless?), is this necessary?