It only happens with that particular Alert modifier, with other ones it works fine.

You're missing the point, the problem isn't with the counter, that was just to demonstrate the problem with Alert.

The PulsingCircle1 animation sequence does need to play in reverse after playing forward because I'm trying to create a glow effect that fades in and out I'm try the sample code and I'm not seeing any animation, the blue ring is just blinking on and off.

Will this be fixed in iOS16?

Nevermind, the issue was that I forgot to transform the regionOfInterest from AV coordinates to Vision Coordinates.