Reminders badge stuck at one event

I have this weird issue with reminders app on my macOS Sierra (16A323). It always show 1 missed event count on the red badge on the app icon in the dock, but I don't have any events there at all. I cleaned up the list. I tried to view through hidden events, find something with the search box, look for past due events, use automator to delete all reminders - nothing seems to be working. I must say that I don't see any reminders on my iPhone either, and no badge there. It seems like this badge stuck only on my MacBook, even though all my devices are synchronized through iCloud. One more interesting thing. Recently I made clean install of macOS Sierra, and the badge is still there. So I suppose it not a cache or dock related issue. When I disable iCloud in Reminders accounts - badge is going away, but it's coming back after I enable account again.

I had pretty similar issue with my Calendar app on Mac. It was related with Family Sharing. We disabled family sharing, and there were a note about that in Calendar, it was kinda hard to find it, and because of it badge was shown on the Calendar app icon in the dock. When I deleted that notification - badge was gone. And I suppose, badge on Reminders appeared after I disabled family sharing as well.

Does anyone had the same issue? I mean it's not critical, but this badge is driving me crazy because I always think that I might have missed something from Reminders list. And googling for it gives no results with effective solutions.