Thanks for the reply. I have forwarded your questions to the engineering team and will provide an update as soon as I heard back from them. In the meantime, here is the definition of the interface
EnableShareComputerSound for your reference:
/// \brief Set to enable or disable the audio when sharing.
/// \param bEnable TRUE indicates to enable. FALSE not.
/// \return If the function succeeds, the return value is SDKErr_Success.
///Otherwise failed. To get extended error information, see \link SDKError \endlink enum.
/// \remarks Valid for both ZOOM style and user custom interface mode.
virtual SDKError EnableShareComputerSound(bool bEnable) = 0;
So this should work as a workaround.
Hope this helps. Thanks!