About hitting the print screen button by accident. I have the same issue and like you I can sometimes get out of it by hitting ESC. I think this sometimes fails because the snipping app isn't in focus (even though it's covering the entire screen).
The trick I found to get out of it is to hit ALT+TAB. It ironically puts another app into focus and when that happens, the snipping tool exits. Snipping tool is pretty great though. I wish macOS had the same.
The trick I found to get out of it is to hit ALT+TAB. It ironically puts another app into focus and when that happens, the snipping tool exits. Snipping tool is pretty great though. I wish macOS had the same.