shadydom css of one component leaks in other components in Edge18

[mohamedafzal03]

I have ten custom elements with styles which acts as global in the document and then i am appending shawdowDOM in one component which i added another style(scoped style in this component),then i am importing pollyfills to make support with other browsers
it works fine with the native supported browsers but in edge browser v18 and chrome V49 and so on, the scoped style overrides the global style which is not the behaviour of shadowDOM

[mohamedafzal03]

For further Clarification on the issue
reproduce the issue from the repository
repository link
this repo contains the issue that when css applied on particular customElement
are inherited globally on all custom elements which is not the behaviour
to be expected after applying Shadow DOM with ShadyCSS.
this issue occurs only on i.e 11

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed after being marked stale. If you're still facing this problem with the above solution, please comment and we'll reopen!