I just noticed another annoying behavior with my Garmin Edge 520.
When a ride is started, it seems you can't go into the workout -> intervals settings page and change any of the parameters. It will appear as if you can change them, but after you finish and back out of the screens, the change will not stick.
This can't be a feature, can it? It seems reasonable to do multiple kinds of intervals within a single ride (like what I had to do today).
