This drives me nuts. Cubase seems to move the snap points randomly at times, I’ll be working on a project and a random piece of audio will suddenly have its snap point changed. I’ve never been able to figure out why this happens, if it’s me, or literally just random. Catches me out all the time. I have zero use for moveable snap points personally, so I’d prefer a command that snaps the snap point back to the start of the event instantly without moving the cursor to the start of the event and then reseting.
It’s rare I get the situation you describe but it does happen.