After the guild master launched the chariot, as assistant GM I couldn't see the cooldown for the skill until I clicked on the button to try and launch it. (then it will say I have to wait N minutes to launch it) The GM also had his timer reset every time he died at the ward tower and respawned at the base which meant no one knew how long the cooldown was without trying to launch it again.

Not sure if this is the same for the other GB skills but please test this and fix it please. Thanks!