Box collider inside or outside the 3D object

I recently upgraded from a 2019 to the 2021.1.16f1 version. Normally, when I added a box collider to an object, I was able to distinguish areas of the box collider that were inside the 3D object and areas that were outside of it by a slight change in colour of the actual line itself. The areas of a line inside the 3D object were a bit darker green than those who were not. But in the 2021 version it no longer makes this distinction for some reason, making it impossible to know where the lines are. What checkbox do I need to tick to bring it back? thank you so much

 

Nevermind, I realised it's only when I use the edit bounding volume button. When I change the collider using the XYZ coordinates, it still shows normally