Hi Sigi,
Strange, I do not see a 4:3 factor, but a more or less exact 2:1 factor. Setting RIT to max (99.999 kHz) leads to ~50kHz shift.
Sorry for posting already known issues, but as there is no known issues listing in the release notes, I could not guess. Lets hope that this will be fixed in an upcoming release.
73 Jean DJ0VL