Calculation of pace per kilometer

It seems there is something wrong with the calculation of the pace per kilometer. Here is my husband’s free run, where the pace per kilometer was always below the calculated average. But it also applies to fixed distances such as 10KM.
Recently I accompanied him with my bike and tracked it myself with another app. The overall average is correct.

-What is the brand and model of your mobile device?
Galaxy A72

-Which operation system is your device using?
Android 13

-Which version of the Freeletics app are you using?

-Which language is your app set to?

-Which timezone/state/country are you in?

-What date and time did this problem occur?
Seen it twice this week