There is a difference between Linux and Mac freeze. On linux, if freeze and I insert pdb.set_trace() at the end of the hide_window, it will let cursor blink again, while on Mac, this won't work.

I try self.widget.after(200, self.hide_window) and it doesn't work, too.

I install Tk 8.5.18 as the web recommand, should I need to reboot or chnage the default path? it still bump out the warning that I'm using 8.5.9 instead.