Hi.

Yesterday I noticed the same problem: no incoming call recording.Traces back to last SFOS update to 2.2.0.29.
However what puzzles me is that the native call recorder works fine with both incoming & outgoing calls.
I have also noticed that harbour-callrecorder records a small instant of the ringtone before going silent. It's not easy to notice it at first time..
I think a bit more testing is necessary and I also agree with @juiceme: the update to pulseaudio 11 might be related....

Regards.