I really appreciate your effort to get this issue seen by everyone …plus hopefully Blizzard eventually…
I’ve changed my Battle.net avatar a bunch of times and I’m still stuck with Overwatch logo here, and I have changed my in-game player icon a number of times. I do know though that all profile pictures I’ve seen here on the forums were in-game icons only so I am assuming the intended functionality was to let you pick one of your in-game ones, or for it to choose whatever in-game one you had equipped.
Right now I can’t even get to the profile picture change menu, when I go to my summary the profile picture doesn’t have a button there, there’s nothing to click, no window pops up. It’s probably not a good idea to make any assumptions but hopefully that means they’re fixing it?