Some users who have upgraded to macOS 27, known as Golden Gate, are reporting bugs and performance issues, even though others are finding the new version to be smooth and efficient. The main problem appears to be with Mission Control, a feature that allows users to manage multiple desktops and windows visually. Several users describe it as broken, glitchy, and sluggish. One long-time Mac user called Mission Control "the most significant visual glitch" they have ever encountered. Another user, who heavily relies on multi-desktop features, noted that dragging a desktop to another monitor leaves an unresponsive black screen behind, requiring a workaround involving creating and deleting a new desktop. In a separate discussion, a user described Mission Control as "glitchier, laggier, and buggier," with animations that judder and instances of a completely black screen when switching to a full-screen application. Other areas of the interface, such as the menu bar and Control Center, are also being reported as sluggish. Some users are also experiencing issues with Spotlight search, though this is attributed to the system reindexing after the installation of the new macOS version. While Mission Control is the most significant concern, some users report that stuttering and glitchy animations can be found in other areas of macOS 27. However, there are also users who are finding that macOS 27 runs smoothly for them, praising it as a vast improvement over macOS 26. Some users are holding off on upgrading to Golden Gate due to concerns about the stability of the release, with some noting that macOS 26, also known as Tahoe, was a messy release. There are frustrations being expressed about the beta testing process, with some users stating they have not received feedback on bugs submitted since the Tahoe release. One user mentioned they used to receive responses to their bug reports, but this has not been the case recently. Some users have compared macOS to Windows, referencing Microsoft's quality assurance department, though this subject is not often discussed in relation to Apple.