Feedback "C" inteactive gizmo not appearing in Stamp mode

I've created a single tile medium sized terrain in Unity 2021.2 URP, and I can't get the "C" gizmo appearing.
In theory, holding the "C" key, I shoud see a gizmo in Stamp mode allowing me to resize or rotate the brush shape before stamping it into the tile.

The fact is (yes, I have my gizmos enabled and the Terrain Tools + Terrain Sample Asset installed), this gizmo is not appearing for me.

I have to use the old keys to have my brushes rotated or resized:

A: brush strenght.
S: brush size.
D: brush rotation.

Control key + click is not subtracting my mesh in Stamp mode. It is doing it in Sculpt mode (Noise).

 

Same for me did you found a solution?