Lately, I’ve noticed my cursor in the elevation profile doesn’t ascend, but rather continues along the bottom of the of the profile map. Also, the more specific elevation profile in the upper right will show the percentage of grade change no problem, but the diagonal line will eventually disappear up out of the screen so that all that’s left is a black box. Here’s a resulting picture (wish I had taken a “before” pic):
You can see my cursor near the KOM, kind of hovering below the grade, and you can see there’s no elevation profile in the detail box in the upper right - just a percentage. Prior to this point, when I was just entering Box Hill, the detail box clearly showed the diagonal line representing the grade.