It's not going to impact Taiwan, but it's another strange storm in a year of strange weather. Not sure if this is a result of the el nino or global warming, but several storms this year have formed well north of the usual germinating zone.

As the track shows, this one started east north east of northern Taiwan, travelled north, came back down south, and is now heading north again. When you look at the track as is, it seems to be the exact opposite of what a normal track looks like.

Furthermore, instead of continuing on the usual recurve path north-east, it's meant to make another turn to the west and make landfall in Japan.