"Original Sound" stops working randomly & forced to reload Zoom!

[roarkh10]

 I am a guitar teacher. 'Original Sound' often stops working randomly AND the 'Original Sound' On/Off Button [upper left corner] also Disappears! 

I can't turn 'Original Sound' back on using the Button,so I am forced to reload Zoom! 

And Resetting the 'Display Original Sound' option in Audio settings doesn’t help!

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 NOTE:  Sometimes the 'Original Sound' Button disappears  without causing any problem.

[Zxi-Issues]

It may not be random, I know the culprit for my situation, at least.  It may be the same for you.  If you "Leave Computer Audio" during a session, it will turn Original Sound off.  It will not come back on unless you turn it back on.  I've written several "report problem" cases via  Zoom.us > Submit Feedback  and suggest you and every student you have submit one as well.