I know Strength Trainer isn’t really good at detecting the spikes in HR, but this is even worse:
Here’s a 14-second-long GIF (the forum didn’t allow uploading a movie file):
Right now, during an exercise, the heart rate number doesn’t update.
Heart rate is correctly registered when I finish the workout, so this is likely just a display bug, but it’s really annoying.
Doesn’t happen always.