Collectible Card Game Headquarters

I encountered a problem trying to playtest German Highlander on XMage.de. I couldn't see my own open lobby on the list of games when and only when the format was set to European/German Highlander. Other formats like Canadian Highlander didn't cause the same problem, even with the same decklist. I can't be 100% sure if others can see the lobby, but I suspect not, and certainly won't be waiting around for an hour to see if someone joins.

As far as I could tell, it didn't seem to be related to anything like filter settings, and as mentioned above, different "Other"-category lobbies seemed to show up and work as normal. I can only imagine that it's some kind of an undiscovered problem breaking the functionality of any lobby with the format set to European Highlander specifically. Of course, it could only be me, but that should be fairly easy for someone else to disprove or verify.

After a follow-up test, I can confirm that no one else can see the open lobby either.