When sharing video, audio is lost

I’m relatively new with Jitsi and really appreciate all the features added recently. However I encountered this problem. A user shared a video, which I received fine, but I was not receiving audio from that user. Everyone else was fine, we all saw and heard each other, except I could not hear that user. Has anyone experienced such a problem?

Yes, I have encountered this problem in my video conferences of the last few days. In some meetings, 5 to 6 people were present, but we did not have the audio and video of one or two of them, and we had to use another software.