Audio can't be shared while screen sharing

Google Duo QuestionsCategory: AudioAudio can't be shared while screen sharing
Max asked 12 months ago

Screen sharing works totally fine. My phone’s microphone is also fine since they can hear me talk. But the audio of the video that I am sharing does not come thru. The confirmation after the screen sharing to share my audio does not appear. What seems to be the cause and the problem?
I already cleared the cache and reinstalled the app but to no effect.
Phone: POCO F3 | 8/256 Black Variant