GitHub gists now only show their 30 most recent comments when first displayed. You can click Load earlier comments… to view more. This allows gists that have many comments to appear more quickly.
Learn more about gists here.
In February 2020 we announced the deprecation of the general purpose "Delete reactions" REST API in favor of separate REST APIs for each place reactions can be applied. The old endpoint has been removed, which sets us up to scale and support the Reactions API better in the long run.
Learn more about the supported REST APIs for deleting reactions for issues, pull request comments, and more.