As for me, I think it will be diff for each server. In Russian Off we have no same spots as u say. But there are a lot of them at Ether (Acc Port) and Elan near the columns. But I never saw some kind of duping process during them.
I think it belong to geodata bugs with player "location off axis". The server just returns u to your normal coordinates when u suddenly bypass geodata. So, if u can do it not suddenly, but manually.... - u will make that DejaVu process working for you...
I think it belong to geodata bugs with player "location off axis". The server just returns u to your normal coordinates when u suddenly bypass geodata. So, if u can do it not suddenly, but manually.... - u will make that DejaVu process working for you...