Today's changes to Garmin Connect finally make it usable in my opinion. I'll finally start using it instead of the previous version that I've been using.
So far the only glitch I see is the units on the x-axis of the cadence display. It should be either time or distance like the other graphs above it, but it looks like it may be showing number of steps.
If one moves the cursor across the other graphs, it tracks on all three of the graphs of Elevation, Pace and Heart Rate. If the same x-axis units were used for cadence it could operate like the other three.