since the internal windows are in window_map now, it's possible we'll get them back when we check what window an event happened on. so don't abort if that happens anymore.

openbox/event.c

@@ -475,10 +475,12 @@ static void event_process(const XEvent *ec, gpointer data)
             client = WINDOW_AS_CLIENT(obwin);
             break;
         case Window_Menu:
-        case Window_Internal:
             /* not to be used for events */
             g_assert_not_reached();
             break;
+        case Window_Internal:
+            /* we don't do anything with events directly on these windows */
+            break;
         }
     }