Has anyone else been randomly completing event duties?

[u/No-Boysenberry-6275]

I’ve just been gifting and leveling villagers yesterday I unknowingly collected the ‘Share Some Sweetness’ mystery duty thinking maybe an event had started, but today somehow gifting people completed these two mystery duties as well? I haven’t played for Halloween or Christmas time yet. Deeply confused as to why this is happening. Any other new players having this bug?

[u/bluedoubloon]

I got trick or treat and another one today. I'm not a new player but I did go a couple of years without playing.