I know that the Flarum extensions library automatically pulls data from packagist.org. The extension huseyinfiliz/modern-footer was listed until today, but after the "unfork" process, it is now hidden. The download counts and other data on packagist.org remain unchanged, and it no longer appears as a fork. I suspect this could have caused an issue because, as I mentioned, the extension was visible until the "unfork" process.
By the way, the "unfork" process was handled by GitHub, and I didn't make any changes.