Sharing audio with Screen sharing isn't working

Since the update to version 6.0.0, the function to share computer audio when screen sharing doesn't appear to be working. I'm checking the box to "share sound" before choosing to share my screen, but the participants still can't hear the audio. Is it broken? Is there a new hidden setting that I'm missing?

I know of two other people who have experienced the same problem in the last 3 days.