User level: Level 1 (20 points)Has anyone encountered this problem on a Mac? When I use Split View with two applications (such as Chrome and Spotify or any apps) and then try to maximize one, the window controls (close and minimize) for the second app disappear. I am also experiencing issues with Mission Control and the ⌘+Tab app switcher.
Posted on Sep 21, 2026 3:48 AM
User level: Level 9 (72,871 points)Sep 21, 2026 5:42 AM in response to Naveen_vc
There have been many issues reported with Mission Control on macOS 27 Golden Gate. Some have been resolved by identifying and removing incompatible 3rd party extensions, others are bona fide bugs.
Have you rebooted your Mac? If not, that's the first step. If that does not help, then see if the problem is present when you boot in safe mode. That process performs some system cleanup and clears caches, and also disables 3rd party extensions that may cause problems.
Start up your Mac in safe mode - Apple Support
If that does not correct the issue, test in a new user account. A newly-created user account will have all settings at default, and if the issue does not occur in that new account then it provides guidance on what may need to be changed to correct the issue.
Add a user or group on Mac - Apple Support
Once the testing is complete, the new account can easily be deleted.
Delete a user or group on Mac – Apple Support
Those steps will help to isolate the problem.
It might help to download and run EtreCheck, written by a long-time forum member. The free version is fine. Post the full report using the Additional Text button. No personal information is revealed.
If the issue persists in safe mode and a new user account, that suggest that it's a bug that Apple needs to address. Bugs can be reported to Apple here:
Personally, the issue you're seeing with leaving a Split View is one that I can replicate, and appears to be a bona fide bug. When clicking the green button on one of the two apps, with the return to separate windows one of them is sometimes oversized and lacks the stoplight buttons. In another variant as I fiddled with these windows, I found that a returned app sometimes also lacks the rounded corners (for some, that would be a desirable outcome).
During testing, I also ended up in a state where one side of the Split View was just one of my desktop wallpapers.
Closing the left-side app there left me with a Space called "Fullscreen" with nothing in it.
Reporting issues like this to Apple is the only way to get them fixed. They do prioritize bugs based on frequency of reports, so the more people who report it, the faster it will be addressed.
Originally posted at discussions.apple.com/thread/256361803