Guild Wars 2

I go to heart of the mist, go to the Game browser, press Refresh, try to join a game with 11/16 players.

Then I have to wait upwards of 1 minute to be told:
“The world you are attempting to join is full”
withouth being able to join another map in the meantime.

Why is this 1 minute time-delay there at all?

Pretty annoying trying to join a map and having to wait 30-60seconds to be told its full. Most so when it does it multiple times in a row.

Why can’t it just immediately say its full so we can choose a different one?