I'm flying the A320neo downloaded from here https://github.com/artix75/A320neo.
I was flying hdg 230 to intercept the 270 deg radial of a nearby VOR .
The VOR frequency and radial were set in the NAV1 radio settings.
While approaching to intercept the radial, the radial value in the radio setings changed itself to 123deg.
I flew back and the radial changed again.