Steps plural have been taken to solve the problem. Maybe this was a pre-upgrade model.
A video from a China Southern flight shows a flight attendant trying to douse flames coming from a portable charger in a carry-on.
https://www.cnet.com/news/watch-a-power-bank-catch-fire-in-planes-overhead-bin-china-southern/?ftag=CAD-04-10aae4g&bhid=28003922178496389431014172000404

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic