Shared document via nc federate can not be opend in nc office

Shared document via nc federate can not be opend in nc office

Both nc on latest nc 26 version

Document must be downloaded
And uploaded again then everything works fine
But after that you have to share it again and the llop starts on the other end if shared via federate

Mote infos commin soon

Maybe someone got sn idee if i missed some in config.php