[4.4.0.58] Bug: VPN "forgets" config and creds after reboot

REPRODUCIBILITY (% or how often): Always (after reboot)
BUILD ID: 4.4.0.58
HARDWARE (Jolla1, Tablet, XA2,…): Xperia XA2
UI LANGUAGE:German
REGRESSION: (compared to previous public release: Yes, No, ?): ?

DESCRIPTION:

Rebooting my phone causes sailfish to forget its VPN configuration in the settings application. It needs to be reconfigured after every reboot. (config not persistent)

PRECONDITIONS:

STEPS TO REPRODUCE:

  1. Configure VPN (tested with l2tp, openvpn and pptp)
  2. Reboot the phone
  3. Check VPN configuration

EXPECTED RESULT:

VPN configuration is present, can be edited, and can be used.

ACTUAL RESULT:

VPN configuration is missing.

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc…)