ONVIF PTZ - not working since update 2021.10

I am using Yi Dome Cameras running Yi Hack-MSTAR
Since update 2021.10, the Onvif PTZ service calls have stopped working.
I am using webRTC with the PTZ via Onvif ptz service calls.
I was getting an " Uncaught TypeError: Cannot read property ‘callService’ of undefined" in the logs (Uncaught TypeError: Cannot read property 'callService' of undefined · Issue #90 · AlexxIT/WebRTC · GitHub)
So moved back to using tap_action service calls but this did not work either.
I have now updated to 2021.11 and no longer have the above uncaught type error in logs but still not working onvif ptz either via tap_action or webRTC.
I had tried Fix PTZ control by Sian-Lee-SA · Pull Request #115 · AlexxIT/WebRTC · GitHub after the 2021.10 update as well.

No errors or warnings etc in full logs.
I cannot figure out why onvif ptz would stop working since updates, any help appreciated please