Mateksys F405-STD resets to default settings by itself


today my Mateksys F405-STD running Ardurover 3.5.1 lost all settings. This happened for the second time now. The board is powered through a Mateksys PDB.
Does anyone else have a similar problem?
I can not replicate the problem. Everything is fine for a couple of startups, the next time all settings are gone.

that likely is a bug that was introduced by into master, Rover-3.5.1, Rover-3.5.0, ArduSub-beta, AntennaTracker-beta, APMrover2-stable and APMrover2-beta.

seems the corresponding fix has not been applied to rover 3.5.x though.

see for reference.