Masking bugs in ver 13.0.1 - Mac Mini M2Pro, macOS Venture 13.5.2

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Very sorry for the delay in getting back. I misplaced the email notification.

I changed the overlay color from red to green to make it easier to see what's going on with the seats.

I looked at the individual mask components (Linear Gradient, Subject, Radial Gradient), and the Linear and Radial Gradients look fine. The issue is the funky Subject mask on IMG_4049, which has picked up parts of the seats, but on IMG_4050, it's fine:

There are many posts here observing that Subject masks often make mistakes with people. Usually you get better results using People masks, which look like this on the two photos:

It didn't pick up the dark knee in IMG_4049, but otherwise they're identical.

When I replace the Subject mask in IMG_4049 with a People mask and then copy all the settings to IMG_4050, I get good results. Similarly if I reset IMG_4049 and copy from IMG_4050.