Thank you for your investigation.
We tried the SDK sample app.
The sample app worked fine with Android6 and Zoom client also worked.
It seems the problem comes from the difference between the sample app and our implementation.
Do you have any clue?
Since you are not able to reproduce this in the sample app, we’ll need some more information in order to determine what is different with your implementation. Can you please provide a demo app in which this issue is reproducible so that we can further investigate?