[Bug]: no audio when using multiple SIP-accounts

[rkoe]

Context

linphone-desktop on Linux for multiple SIP-accounts

General information

• Device: PC
• OS: Linux
• Version of the App: 4.4.10 - Qt5.15.7
• Version of the SDK: Core 5.1.0

Expected behaviour

• I'm using 2 SIP-accounts in linphone-desktop
• Expected behaviour: Calls can be received over both SIP-accounts.
• Real behaviour: Calls actually ring and can be accepted over both SIP-accounts, but audio only works if the "incoming" SIP-account is selected in the toolbar. If the other SIP-account is selected in the toolbar, both phones stay silent after accepting the call.

To Reproduce

1. Add two SIP-accounts, e.g. SIP1 and SIP2.
2. Select SIP2 in the toolbar.
3. Call from an external phone via a SIP1-number.
4. Accept call. => no audio

Additional context

No response

SDK logs URL

No response