Here's the answer I got:
Line6Tony has replied to a personal conversation entitled "Please update us on the satus.".
"Hi. We're still working on it. I have no definite time frame to offer, but it is a high priority internally. We will post again when it's ready. Thank you for your patience."
So I'm guessing they either can't find a good iOS developer to make her/himself available to look at the problem... because can't imagine this simple bug requires so much time to fix.