Thanks for the report, we recently had some issues with the Bitbucket cloud widget but it should be solved now.
Could you confirm if you still have this issue or not ? And if you still have it could you share the errors that you see in the developer console of your browser when the widget fails to load ?
I did notice an ad blocker I used (AdGuard) would block the widget on a PR page, but not on a repo info page. After disabling the ad blocker they both work fine