You'll notice
Useful2 Signal3
Voice mode lets the server pick the transcription provider instead of pinning one.
What's wrong with this entry?
Anonymous. No account, no email.
/voice
What
The voice connection stops sending stt_provider: "deepgram-nova3", so the server chooses the transcription provider. The conversation-engine flag and the language are still sent. Separately, the /voice enable confirmation can now append a note supplied by the server to its usual text.
Evidence
stt_provider
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.