As I tested horde-side, I just created 2 Draeneï, and I can't follow if I use the server name.

While testing other servers, I realised that you can use an incomplete server, and it works. Like name-sar for Sargeras. It does not for Arak-arahm.

I also tried Azjol-Nerub, and /follow does not work. I think it is a game bug with the servers which have a "-". AFAICT, Azjol-Nerub and Arak-arahm are the only ones.

Do you know the most effective way to submit a bug to blizzard ?