F5 just started vibrating :-//

Just a quick thread ti see if this has happened to anyone else or maybe it was just a one off for lucky old me. Finished a ride earlier today. Saved, synced it etc then went back to put the watch on 5 mins later and the key vibe setting had been enabled.

I've since turned it off in the sound settings, but a little weird as I've never had that setting enabled in the past. Not a biggie, just curious if bug related.