How can I stop the display of a bounding box?

Edit: I am using uMap

I notice today when I click on a polygon it is bound by a black and white box with small radius corners. It shows in both the published and editor versions.

I have never seen this and wonder if it is part of the updated UI, and if so how can I prevent this from being displayed? I don’t see an obvious option in the edit settings.

What software are you using?

Ah apologies - edited.

Umaps