Removing image captured with Magnifier

I accidentally captured an image, when using the magnifier on an iPad Pro, but there doesn't seem to be any way to remove it. I've turned the Magnifier off and on in settings, but the image is still there. In a previous discussion back in 2016, there was a suggestion to remove the magnifier by a double-tap on the Home button and swiping it away, but the magnifier screen does not appear in the list of recent apps so there is nothing to swipe away. I presume a hard reset would remove it, but this seems a bit drastic!