Im @EGLL for 3 hours now. Some how now is another controller. But im only doing GROUND. Hows is possible 2 controller telling the same aircraft the same dirrectios???
This has been a known issue on Training Server for a long time.
etc.
Not really much you can do about preventing it other than checking on the airport info to see who on the servers end is technically controlling, and if it isn’t you then I would leave the frequency.