macOS Sonoma "Open File" menu results a "pink or purple screen of death" using mirror screen

Hi! I found a big concern about Sonoma (all versions):


Bug with "File > Open" menu in every app, the window becoming a purple screen when using mirror screen mode


Follow these steps to reproduce:

  • set two screens in mirror mode and connected by wires to the Mac
  • open an app installed on a macOS 14 Sonoma (I used Preview app for exemple)
  • use the "file" menu to reach the "Open File" menu
  • the window of the "Open File" menu results in a entire pink or purple screen on the screen who got the duplicated status. The other screen is normal.


So it's impossible for a teacher to show this "Open File" window on a classroom with a videoprojector.


The latest version update of Sonoma (14.7.5) did not solve the problem.


Others systems like macOS 12 Monterey, 13 Ventura or 15 Sequoia systems aren't affected.

We must use at least Sonoma cos' some apps / pro drivers aren't reliable to Sequoia yet.


So basically, the bug affects Sonoma system in screen mirroring mode.


I don't have a solution at the moment, so if you got any ideas ;)

Topics on internet shows it is a known Sonoma problem.



Posted on Apr 16, 2025 3:23 AM

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Apr 19, 2025 10:02 AM in response to Julien Desbois

I do not currently have a Mac running Sonoma, but I did run it for a full year, and I never came across this problem.


Try these two tests:


1) Do the File->Open thing while running in Safe Mode


2) Do the File->Open thing while booted normally, but logged in to a new user account


Let us know whether the problem is present in either of these two tests.

This will helps determine where the issue may be.


I fully expect the problem will NOT occur in case 1), and probably also in case 2).

Please test and let us know.

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Apr 23, 2025 2:42 AM in response to Luis Sequeira1

Hi Luis & thanks for the reply,


Same behavior in Safe Mode.


And I could add we use Belkin USB-C to HDMI and also Startech USB-C to DVI adapters... both does the same thing.


Maybe the "Open File" menu problem appeared since Sonoma 14.7.2 and it stills in the latest 14.7.5.

Only macOS Sonoma is affected.

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macOS Sonoma "Open File" menu results a "pink or purple screen of death" using mirror screen

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