Giant Mouse Cursor Mystery.

Yesterday, after taking a break, I returned to my Mac (Mac Mini M1 running Sequoia 15.2) and noticed my mouse cursor was abnormally large—about 2 inches in size. It was sharp and not pixelated at all. No matter what I did, I couldn’t fix it! I restarted the Mac, deleted all login items, disconnected external devices, shut it down, and nothing worked—the oversized cursor stayed right there. Strangely, today the issue is gone. Can anyone explain what happened? I’m glad it’s resolved, but I really want to understand what caused it.