bug: MatButton renders active state when cdkCopyToClipboard is applied

[ChristianKohler]

Reproduction

Use StackBlitz to reproduce your issue: https://stackblitz.com/edit/angular-fw7eev?file=src/app/cdk-clipboard-overview-example.html

Steps to reproduce:

1. Click on the copy button
2. Move the mouse cursor outside of the button area

Expected Behavior

Button should not be highlighted after the cursor moves out of its area

Actual Behavior

Button stays highlighted

Environment

• Angular: 10
• CDK/Material: 10
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Mac

[Tomassito]

Hey! Any update on this one?
Haven't tested it but it looks like this is causing the bug?
https://github.com/angular/components/blob/main/src/cdk/clipboard/pending-copy.ts#L55
What's the reason for it?

[amysorto]

This problem still persists with the MDC based button. Removing the 'Fixed in MDC' label.