Volla phone 22 new display no sound on incoming call.

[duportail]

If I receive a first incoming call, all goes well. But on the next incoming call, the phone rings, but no sound at all. Also on outgoing call, no sound. After reboot all is ok again, but only on the first incoming call.
Happens on 20.04 stable channel and rc channel.
pulse log:
https://dpaste.com/48A3UHXBX