Audio can't be shared while screen sharing

Google Duo QuestionsCategory: AudioAudio can't be shared while screen sharing
Max asked 6 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