When switching between activities via the left/right arrows, the color bar indicating which activity view you’re on (overview, power, heart rate, intervals) will not display correctly if switching between an activity with power and heart rate and an activity with just heart rate.
Image 1: activity with only heart rate, heart rate pane selected
Image 2: accessed via the left arrow near the activity title, the heart rate pane is displayed but the color bar says I’m on the power pane, which is not correct. Clicking on the power symbol will update the pane as expected.
The same relative color bar position issue persists with other pane/bar combinations when moving between activities that have a different number of color bar sections available, e.g. viewing the intervals pane on a heart rate only activity and then tapping the previous activity left arrow will place the color bar under the heart rate symbol even though the interval pane is displayed.