Crash when using WK order past a certain point

I used WK order to a certain point and past 竹 (that was among the last kanji I learned) the app crashes when I press Study. I tried changing the kanji order to Genki and now it doesn't crash anymore. I think it is a specific kanji that comes up in WaniKani order that causes this.

I stopped learning more kanji for now so I do not accidently stumble on it in Genki order and can still do my reviews.

I also reported the problem using the normal android dialog, so there should be some logs or something?