I just chatted with my former coworker. She said that the toxic hag manager (who turned my last workplace into a hell and the first reason why I quitted) makes another drama(s). This time, the victim is the good manager. I hope my former good manager is strong enough to handle it. I don't get why the management does nothing with the bad one. A lot of employees have complained about her, yet still nothing.
The memory about it makes me grateful and appreciate my current workplace despite the troubles here.