Multiple VPN providers are reporting a bug in Android 16 that disrupts their services and may compromise user security. The issue arises after VPN app updates, causing the apps to malfunction in the background and preventing users from connecting to the internet. Proton VPN first flagged the problem in September 2025, with other providers like Mullvad VPN, WireGuard, and TunnelBear also experiencing similar issues. The bug can leave users confused, as the VPN app may appear to be connecting but fails to provide internet access. Restarting the app does not resolve the issue; users may need to reboot their devices or reinstall the VPN. The bug affects a small percentage of users inconsistently, complicating diagnosis and resolution for developers. Google has not provided a comprehensive acknowledgment or solution, with the last communication indicating that the issue has been reported to relevant teams. Users are advised to monitor their VPN performance after app updates.