The copy link feature of YouTube videos is not working. This is due to a policy violation of Clipboard API.
[Violation] Permissions policy violation: The Clipboard API has been blocked because of a permissions policy applied to the current document. See https://crbug.com/414348233 for more details.
Note that this only affects the old "Link" button UI (which triggered clipboard write differently). The newer Share UI is working fine.
The fix is to explicitly allow the clipboard permission in the iframe.
<iframe
src="https://example.com"
allow="clipboard-write">
</iframe>
Screenshots
Copy link
Unable to copy link to clipboard
Newer Share UI (unaffected)

The copy link feature of YouTube videos is not working. This is due to a policy violation of Clipboard API.
Note that this only affects the old "Link" button UI (which triggered clipboard write differently). The newer Share UI is working fine.
The fix is to explicitly allow the clipboard permission in the iframe.
Screenshots
Copy link
Unable to copy link to clipboard
Newer Share UI (unaffected)