Inconsistent display of location zone

Hello,

I have a very strange behaviour of the display of a person’s location in the lovelace.
In dev, I have:

Entity = Person: 
  - State = Home
  - lat/long = x & y
  - gps_accuracy = 19
  - source = Device
Entity = Device    (#Which is an Android phone with app installed and sensors activated*)
  - State = Actual Zone    (#40 km away from home*)
  - lat/long = x & y    (#the exact same ones)
  - gps_accuracy = 19

In Lovelace, the state of both seems to be changing (Home / Actual Zone) depending on refresh while I haven’t moved for the last 4 hours.
History view of the person also shows the right Zone for the last 4 hours.

Anyone has similar issues?