I had a 10k run yesterday with the latest beta that has a new Sensor Hub SW Ver 28.11. Rumours were that some of the OHR bugs would be fixed in this version.
I don't know if it was a fluke, but the OHR reading was all over the place. I've never experienced this type of cutouts or such a low HR reading for over 1km (see from km ~8 to ~9)
Previous betas were more consistent in OHR readings. Run conditions were the same as always.