Why Android-app shown as iphone_stationary?

I installed Android Companion app on Google Pixel 5 phones (Papa and Mama), the 3rd one is an iPhone (using iCloud3 integration). Why the entities were shown “iphone_stationary”? Both are Android phones. And the iPhone also shown as “stationary”. We were at friend’s location.

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Do you have a zone named iphone_stationary?

No, I do not. There are 3 additional zones defined, but they are named normally as location name “xxx shopping cente”, “zzz campus”, “yyy school”.

You were right, I found the zone but it cannot be edited/deleted. I think it was created by iPhone or iCloud3 automatically. I made a post here in the iCloud3 thread: