Hi! When solving a crossword puzzle from my schedule, I've noticed this issue. I'm using renshuu with non-English "Dictionary Language" set in settings. Initially or after refreshing the puzzle page, the clues are indeed written on that language; but then, after clicking the "Clues: Kanji/English" button twice (so, rotating to kanji and back to meaning clues), they become to be displayed in English. Sorry if it's the intended behavior since the button literally says "English", but then there's no way to switch back to preferred language except refreshing the page again. That for me seemed unlikely to be intended.
Steps to reproduce:
Open Settings -> My Info and set "Dictionary Language" to "Russian"
Click on a Mastery Schedule
Click on "PUZZLE"
Notice that clues are in Russian (screenshot 1)
Click on "Clues: Kanji" button (screenshot 2), then click again
Now clues are in English (screenshot 3)
P.S. If this is actually a bug, notice that the button always says "English" which would be wrong if its behavior is changed to take into account user's preferred Dictionary Language.