mungouk said... I'm also seeing text in the answer field being changed to something pretty crummy -- is it using the same font as the Kanji? (ie. the question, big character)Yes, the script will change both the kanji prompt and the text in the answer field to the same font. Unfortunately, as you've seen, a lot of them have pretty poor support for Latin characters. You could experiment with fonts, but it's time consuming and your options become somewhat more limited when you need to find those that are legible in both English and Japanese.
Or do we have to experiment to find script-type fonts that also have decent Roman glyphs?
If you're fine with making a small edit to the script, you can keep the answer field in the default language but keep the randomized kanji appearance by opening up the script and removing ", #user-response" near the bottom of the script. By doing that, you can choose whatever fonts you like without worrying about whether or not you'll be able to read your answers as you type them.
Hope that helps.