When accepting a call via CallKit sometimes there is no sound

[Cheesooo]

• 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 a Signal Call is accepted via the CallKit (Apple Call Screen thing) the sometimes there is no audio.
The other side can hear you. But you can't hear them. Video calls have the same issue.
Only when restarting the call, the audio comes back.

Steps to reproduce

• Let somebody call you via Signal Audio/Video call
• Accept the call while the phone is locked over the Apple CallKit screen

Actual result: sometimes - not always there will be no sound

Expected result: audio should always connect

Device info

Device: iPhone 15 pro max

iOS version: 17.5.1

Signal version: 7.14 (140)