Now (r20140) after taking the first treasure, I still have the bug but -that's the purpose of the update- also an error:
ERROR: JavaScript error: gui/session/messages.js line 899 TypeError: Engine.GetGUIObjectByName(...) is undefined addChatMessage@gui/session/messages.js:899:51 playersFinished@gui/session/session.js:549:1 g_NotificationsTypes.defeat@gui/session/messages.js:316:3 handleNotifications@gui/session/messages.js:531:4 onSimulationUpdate@gui/session/session.js:824:2 __ eventhandler263 (simulationupdate)@sn simulationupdate:0:1__
(introduced by r19955)