Comment # 10 on bug 1162654 from Martin Doucha

(In reply to Wolfgang Bauer from comment #6)
> Maybe the kanjidic file included in the edict package is broken?

Yes, I was about to say that. Checking for dictionary updates in the menu will
fix search and kanji browser but radical selector will remain broken.

$ file .local/share/kiten/kanjidic
.local/share/kiten/kanjidic: ISO-8859 text, with very long lines

$ file /usr/share/edict/kanjidic 
/usr/share/edict/kanjidic: UTF-8 Unicode text, with very long lines

I guess that's what's going on.