To be honest, i don't know if it is a Bug or if it has been always so. I wanted to join a Server on that i have been before some Times. But this Time, the Server wanted to download all the needed Files again, even if they are present in the Packages Folder already. After that, i had all the Files 2 times, where the new downloaded ones had the (1) in the Filename. The only Difference was, that i've used the Offline Mode of Steam. Is that a normal Behaviour, that the Synchronisation of the Files, between Server and Client don't works properly in the Offline Mode?