Some Mac users testing macOS 27.2 beta 3 say Mission Control remains unreliable. Reports include lag, black or incorrect Space previews and disruptive behavior while dragging files, indicating that the latest beta has not resolved every workflow problem.
A MacOSBeta discussion tracks Finder and Spaces regressions on a clean beta 3 installation. Other users describe related Mission Control problems, but community reports do not establish that every supported Mac is affected.
Apple released macOS 27.2 beta 3 as build 26B5101f. Its public release information does not list a comprehensive fix for the Mission Control complaints, so testers should not assume the update addresses them.
Don’t miss the best of The Mac Observer
Set us as a preferred source and our Apple reporting ranks higher in your Google Search results and Discover feed — one tap, no account changes.
What affected testers can do
Because this is beta software, the most useful step is to submit a focused report through Feedback Assistant with the Mac model, display setup and steps that reproduce the behavior. A screen recording and sysdiagnose can help Apple distinguish a visual issue from a window-management failure.
Users who depend on multiple Spaces or drag-and-drop should keep beta 3 off their primary work Mac. The Mac Observer’s beta 3 overview covers the wider release and installation context.
There is no verified universal workaround. Logging out, restarting or simplifying a display arrangement may temporarily change symptoms, but those steps should not be presented as a permanent fix.
A future beta may address only part of the issue, so each reported symptom should be retested separately rather than treating one smoother animation as a complete fix.
Discussion