I use the Windows client of version 4.2, which has two clients a and B. A creates a conference room, B joins the conference room of a, and then leaves the conference and repeats this action for more than three times. My problem is: when a leaves the conference, close the locally created stream (localstream - > close()), and then my program is stuck, unable to close the client! I have observed that the local audio and video are still occupied and cannot be released. I guess it is caused by this problem! Is this a bug? Please help me! Thank you!