macOS Tahoe Bug Triggers Studio Display Flicker, Persists Through 26.2

Overview

• MacRumors reports firsthand testing that found the flicker continues under macOS 26.1 and 26.2, with users saying it has recently grown more frequent.
• The glitch is intermittent and most often appears when switching to bright or white screens or scrolling light webpages, sometimes repeating for several seconds.
• While most complaints involve Apple’s Studio Display, users also describe similar behavior on other external monitors and some Mac notebooks.
• Apple has not publicly acknowledged the issue or announced a fix.
• Troubleshooting such as disabling Night Shift, True Tone, or automatic brightness has offered only mixed, anecdotal relief.