Copilot.microsoft.com is an unsupported website

[Greg-21]

The Microsoft Copilot website displays a cookie banner (see attached screenshot below) when visiting it for the first time, even though there is already a rule for microsoft.com. Why is this so? Because the Copilot website uses a banner from Bing instead, which is completely different than the standard one used by Microsoft on the vast majority of their websites.

It would be very easy to add support for Microsoft Copilot (because this banner uses proper IDs for the banner elements we are potentially interested in, unlike the regular one, and the rule created for Bing could simply be reused) if it was technically possible in the current implementation of the Firefox cookie banner blocker. But it is not, unfortunately.

So for now, it seems that bug 1789455 on Bugzilla needs to be resolved first before the next steps can be taken here.