There is a serious bug with screensavers on macOS Ventura 13.3:
If you have two monitors on your mac, when the screensaver starts, the content of the main screen will show on the second screen, and the content of the second screen will be missing completely.
We are seeing it with yesterday's RC release (13.3 22E252) and are worried this will make it into the public release.
Unknowns:
If you have two monitors on your mac, when the screensaver starts, the content of the main screen will show on the second screen, and the content of the second screen will be missing completely.
- The bug affects third-party screensavers (such as iScreensaver and Aerial )
- it also affects some (but not all) Apple screensavers: for example, Apple's "Hello" screensaver is not affected, but the "Message" screensaver is affected
- the bug is random, so if you test, be sure to test multiple times -- we are seeing failure rates of between 10% and 90%.
- This has been reported multiple times to Apple (Feedback cases FB12023530 and FB12007471 )
We are seeing it with yesterday's RC release (13.3 22E252) and are worried this will make it into the public release.
Unknowns:
- does it happen on systems with 3 or more monitors?
- does it happen on Intel or is it an Apple Silicon bug only?