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I'm having the same issue, raise to speak, registers my question, maybe start answering and immediately go back to home screen.
I'm on watchOS 5.1.1. Was using the beta version before.
 
I'm having the same issue, raise to speak, registers my question, maybe start answering and immediately go back to home screen.
I'm on watchOS 5.1.1. Was using the beta version before.

I've never used beta software, and yet, I have this problem also.
 
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