Styling conflict with Shadowdom polyfill and a nested paper-dialog

[pehiv]

core-drawer-panel.css has a #main {position:absolute;...} rule. When using a shadowdom polyfill, this rule falls through to the paper-dialog #main node. This causes conflicting rules. This also applies to any contents which contain a #main id. I was able to work around this by applying a /deep/ rule to my paper-dialog which forces the position to fixed. The proper fix would be to make the core-drawer-panel #main rule more specific.

Ex:
core-drawer-panel.css

#main {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
}

would become

core-selector > #main {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
}