This update is far inferior to the earlier update as the user interface is disorienting. Cant seem to find my way around and starts with Korean as a default. Also if you look at the app description, there are some grammatical errors. Just seems a little unprofessional to me.
Update: now they fixed the bug and can see in English. Still think the interface is ugly and fonts are too small for an iPhone. Like the old version much better.
Like someone said, management is far more concerned how the nut is served than the website or the app.
lorenz9901 about Korean Air, v5.0.4