iPhone Bug in Fitness app?

[skitidetdu]

I have my fitness app set to close the rings when I have reached 500 kcal. I'm a fairly active person so I reach this more or less every day. But sometimes the day after I've closed the rings I get a notification that I didn't close the rings yesterday and when checking the kcal count from the day before it is much lower than it was when going to bed. Sometimes it works fine and sometime I get this strange behaviour.

Anyone else experiencing this?

 

[pacorob]

Sorry I'm more using third party apps for my run statistics and sync with Apple Health to use some of this data since a few of third party apps can't connect directly with either Garmin (my watch) or Strava (which I sync with).