Just the other day,i was about to taxi onto the runway,there was an AI aircraft behind me .they requested for takeoff clearance first but ATC told them to wait as i was on the runway.When i requested,ATC told me that the AI plane was on the runway.Both of us were told to hold our position.However, the AI plane was not on the runway as ATC said.instead it was behind the line on the taxiway entrance to the runway.After ten minutes or so, i decided to redo the flight and so i exited FS.