The software left part of a face in the background. Can I bring it back with the fine detail brush on the Foreground panel?
This works sometimes, depending on the color contrast between the foreground and background. But if it doesn’t work, or if you remove too much when getting fine detail on the Foreground and Background panels, a simple solution is that you can just go back to the Remove FG/BG panel an add to the marking you already did.