Broken material icons

[Maddoc42]

Some icons from the material collection do create a proper shadow. In some cases the fault seems to origin from paper.js boolean operations (see for example paperjs/paper.js#968).

The following is an incomplete lists of broken icons:

action/face
action/change history
action/important devices
action/perm identity
action/remove shopping cart
action/speaker notes off
action/touch app
action/update