处理 clientmessage 事件和全屏窗口

src/xcb/xcb.c

@@ -285,6 +285,7 @@ void free_window_list(window_list_t *window_list) {
 }
 
 void clean_xcb(void) {
+  focus_window(XCB_WINDOW_NONE);
   clean_xcb_cursor();
   clean_ewmh_extension();
   xcb_disconnect(conn);