Various settings reverting

Is it a bug?

• I know this is an issue with the app, and contacting Mullvad support is not relevant.

I have checked if others have reported this already

• I have checked the issue tracker to see if others have reported similar issues.

Current Behavior

Today I turn on my computer and once again, mullvad vpn decided to reconfigure itself...

VPN settings > Auto-connect: went from enabled to disabled UI settings > Start minimized: went from enabled to disabled UI settings > Notifications: went from disabled to enabled

These seem to be the worst repeat offenders but I have previously had other settings revert too - notably I recently had to re-enable local network sharing after banging my head against the wall for an hour trying to figure out why Sunshine wasn't accessible.

mullvad-report.log

Expected Behavior

My settings stay how I set them.

Steps to Reproduce

1. Be on EndeavourOS
2. Update Mullvad
3. Hope that the settings don't change
4. ????
5. Sadness This happens often, I don't know what caused it.

Failure Logs

The log is too big so I attached it above... this stood out to me though:


====================
Log: ~/.config/Mullvad VPN/logs/frontend-main.log
====================
[2026-09-04 10:05:50.080][verbose] Chromium sandbox is enabled
[2026-09-04 10:05:50.081][info] Running version 2026.4
[2026-09-04 10:05:50.081][error] Failed to read GUI settings file: SyntaxError: Unexpected end of JSON input
[2026-09-04 10:05:50.259][info] Detected locale: en-GB
[2026-09-04 10:05:50.363][info] Verified socket ownership
[2026-09-04 10:05:50.363][info] Verified socket ownership
[2026-09-04 10:05:50.363][info] Connected to the daemon
[2026-09-04 10:05:50.462][info] Skip autoconnect because GUI setting is disabled
[2026-09-04 10:21:16.825][error] Failed to collect a problem report.
            Stdout: 
            Stderr: 
[2026-09-04 10:21:23.410][error] Failed to collect a problem report.
            Stdout: 
            Stderr:

Operating system version

OS: EndeavourOS x86_64 / Linux 7.1.11-arch1-1

Mullvad VPN app version

2026.4

Additional Information

The package is from the Arch repo, not AUR:

$ pacman -Ss mullvad-vpn
extra/mullvad-vpn 2026.4-1 [installed]
    Mullvad VPN client (desktop application)
extra/mullvad-vpn-daemon 2026.4-1 [installed]
    Mullvad VPN client (daemon and CLI)

The GUI did not work for producing an error report.