In the latest BJS version (alpha25), the gizmo color is sometimes gray when it is switched. This is definitely a recently introduced bug, so I consider this a regression; it was working fine before.
Use the classic gizmo manager PG. https://playground.babylonjs.com/#4TBMBR#33
Try switching W/E/R (without moving the mouse). You’ll notice that a lot of times the gizmos are gray. The messed up thing is that it occasionally switches back n forth.
If the gizmo is gray, move the mouse and it changes back to its default color. Super weird