When I create an m3 physics shape, nothing appears, no bone or volume to select, and it doesn't display a bone name in the corner when it's clicked, it just shows the name of the armature. This seems to be the case because when you add multiple physics shapes to a model which has 1 existing already, it places the new physics shapes volumes onto the existing physics shape bone. It also does not select the bone even when the physics shape exists already, although it is still editable, you just have to select it manually.
When I create an m3 physics shape, nothing appears, no bone or volume to select, and it doesn't display a bone name in the corner when it's clicked, it just shows the name of the armature. This seems to be the case because when you add multiple physics shapes to a model which has 1 existing already, it places the new physics shapes volumes onto the existing physics shape bone. It also does not select the bone even when the physics shape exists already, although it is still editable, you just have to select it manually.