I was reading a different app. Somehow my mail came up on part of the screen. I swiped it, the whole screen was mail and now mail is frozen. I refreshed my iPad Pro but that didn’t help.
iPad Pro - reading an app, mail showed up on part of screen. Swiped left, whole screen was mail but froze. Refreshed but still froze. Everything else works.
iPad Pro, iPadOS 14