This has been reported before, but it’s been a few months and the forums even got an update.
My profile picture does not change despite my image used in game.
Replying to affirm the above… this seems to be an “unofficially known” issue (encountered, observed and reported by multiple players, but not acknowledged on the official “Known Issues” topic.) And, replying to consolidate links for reference… the symptoms have changed slightly over time, as noted in this topic:
But, as of this post, this issue unfortunately is still present and impacting players (myself included).