WasapiCapture.Dispose causes freeze

My app uses WasapiCapture to record Windows and it nearly always works perfectly. But very, very occasionally, it freezes during the call to Dispose. I checked the source code, and I see this code

            if (captureThread != null)
            {
                captureThread.Join();
                captureThread = null;
            }

That Join call is a likely candidate for causing a freeze, but I still can’t figure out what would cause this, or how to prevent it. It feels like something is causing the thread to remain alive, but because the problem is so rare, it’s hard to research further.

Any ideas on what to do about this?

[jfrank14]

After putting this down for a long time, I had to revisit it and I think I found the source of the issue. It turns out that the capture thread is calling a notification callback on the UI thread, which can’t respond because the main thread is waiting for the capture thread via the join call. IOW, a deadlock caused by my own code. When I have some time, I will document this in a bit more detail, in case anyone else comes across this issue in the future.

[Zintom]

Note to future readers, I had the same issue as the OP.

I fixed the problem by using BeginInvoke rather than Invoke when updating my UI from the callback.