Sometimes we click too fast in the router to just handle it in IDLE.

gui/event_router.cpp

@@ -58,6 +58,10 @@ namespace gui {
           set_event(gui::Event::TICK);
           state(State::MOUSE_ACTIVE);
           break;
+        case MOUSE_UP:
+          set_event(gui::Event::MOUSE_CLICK);
+          state(State::IDLE);
+          break;
         case MOUSE_MOVE:
           set_event(gui::Event::MOUSE_MOVE);
           break;