Elizabeth Mitchell

Thanks for the repro and the workaround!

Design has split the concept of a ["scrim" out into a separate component](https://github.com/material-components/material-web/blob/main/tokens/v0_192/_md-comp-scrim.scss). I think it'd be good to solve it that way and use a `` inside the dialog...

I believe the reason we're not using the `::backdrop` element is because Firefox didn't support animating it. It may be better to swap to using it to avoid these problems...

Good catch! Yes it's supposed to have some default spacing from the edge of the viewport

There aren't any updates to post of yet. We're hoping to get some more of our team members from Material Web to start working on these outstanding components soon, but...

It is because we haven't built all the components yet.