Silent voicenotes on earspeaker

[Yahx3]

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• This isn't a feature request or a discussion topic

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Bug description

When listening to voice notes, you have two options, loudspeaker or 'ear-speaker'. The loud speaker option works fine. The ear-speaker option produces no sound, not even the notification chime that the voicenote has completed. The screen turns black using the proximity sensor, and the voice note continues to play silently.

Note: Phonecalls work as they did previously. Voicenotes worked fine when using it on previous versions of the app.

Steps to reproduce

• Click play on voicenote in chat.
• Once it is playing, raise handset to ear, with the screen facing your face.
• Listen to the voicenote until completion.

Actual result: Describe here what happens after you run the steps above (i.e. the buggy behaviour)

• A completely silent audio plays.
• The audio file progresses normally.
• There is no notification that the audio has completed.
• ☑️ The screen turns off as expected, until the user raises the phone away from face.
• ☑️ The audio transitions to speakerphone as expected.

Expected result: Describe here what should happen after you run the steps above (i.e. what would be the correct behaviour)

• Voicenote audio plays audibly from the ear-speaker,
• unless the phone is raised away from user's face. Then the audio will transition to speakerphone.
• A chime to play at completion of the audio from the ear-speaker.

Screenshots

Not applicable.

Device info

Device: iDevice 13

iOS version: 16.2

Signal version: 6.6

Link to debug log

Unable to create debug log on iOS.

[Yahx3]

Seems to an OS issue (replicated in iMessages & WhatsApp), since the update to iOS 16.2. For some reason, the audio is muted and does not allow for a volume increase.