Bug in macOS 14 Sonoma prevents our app from working (mullvad.net)

Article summary

A bug in macOS 14 Sonoma's firewall prevents the Mullvad VPN app from working correctly, potentially causing security issues. The bug affects not just the app, but the entire firewall system, allowing unauthorized traffic. The issue has been reported to Apple, but a fix is not yet available. Users are advised to remain on macOS 13 Ventura until the bug is fixed.

Main themes

• macOS bug
• firewall issue
• VPN app compatibility
• system stability
• logging mechanisms
• debugging and troubleshooting
• operating system quality

What commenters say

• The macOS firewall bug is a critical issue that affects not just the Mullvad VPN app, but the entire system.
• The bug may be related to the recent rewrite of the firewall system, which was influenced by the migration from kernel extensions to userspace System Extensions.
• Some users have experienced frequent crashes and errors on their Macs, which may be related to the bug or other issues.
• The verbosity of the macOS logs can make it difficult to identify and diagnose problems.
• The use of the os_log_fault function does not necessarily indicate a serious error, but rather a logging mechanism that can be used at the developer's discretion.
• Reducing log verbosity could improve system quality, but may also make it more difficult to diagnose issues.
• The macOS logs are not always clear or useful, and can be overwhelming due to the high volume of log entries.
• The quality of macOS documentation and the availability of source code can make it difficult for users to understand and troubleshoot system issues.