After som further testing, this is my conclusion aswell!
If you have EoD unlocked on your account, then you might run in to this issue, if you don't (at least tested with only HoT unlocked and tested with f2p-account) then it works perfectly fine.
Can't speak for players with who has PoF but not EoD.
Something interesting that happened on my alt account was however that when I logged in on it, it opened the hero panel with the skiff selection open, something that is normally not accessible on HoT-only accounts.