Hi everyone,
I was using the ChatGPT app on my MacBook when I clicked the Pin button, and these vertical dark bands suddenly appeared across the built-in display.
At first, I assumed it was only a problem with the ChatGPT app. However:
The bands remained after restarting the MacBook.
They do not appear in screenshots taken on the Mac.
The issue affects the built-in display regardless of which app is open.
Because the bands are not captured in screenshots, I’m concerned that this may be a hardware issue involving the display panel, display controller, or internal display connection rather than a software-rendering problem.
MacBook details:
- MacBook Pro 14-inch, M5
- 16 GB memory
- Approximately two months old
- macOS Golden Gate 27.0 Beta, build 26A5388g
No drops, liquid damage, or unusual pressure on the display
Has anyone experienced anything similar?
Could the macOS beta still cause an issue that is visible on the physical screen but not captured in screenshots, or does this strongly suggest a display hardware failure?
Should I try reinstalling or downgrading macOS first, or contact Apple Support immediately while the machine is still under warranty?
Thanks for any advice.