correct map geometry displayed in welcome message, and both displayed in EwG

system.cpp

@@ -77,6 +77,7 @@ EX hookset<bool()> hooks_welcome_message;
 /** \brief Print the welcome message during the start of game. Depends on the current mode and other settings. */
 EX void welcomeMessage() {
   if(callhandlers(false, hooks_welcome_message)) return;
+  if(embedded_plane) return IPF(welcomeMessage());
 #if CAP_TOUR
   else if(tour::on) return; // displayed by tour
 #endif