Description

When you insert a button in the buttons block, it starts with a pill-shape. But the inspector shows the radius set to "5px", which is inaccurate.

Step-by-step reproduction instructions

Insert a button, then carefully change the radius from 5px to for example 6px, and observe the big jump.

Expected behaviour

I would expect the border radius to be unset, because that's what it is. The field could be empty.

Screenshots or screen recording (optional)