I followed up with this internally.
This is a bug with the iOS version of the app, which will be getting patched soon.
For this style of Answering, we will only support English to avoid causing more confusion for users.
Have you thought about using the Reveal & Grade (Good / Hard) system for these questions?
This mode will hide the furigana pre-reveal, allowing you to answer it in your head before the answer is revealed to you. You won’t be able to input the answer like you do now, but it will still test your J > J translation skill. Also, it should save you time by not needing to input synonyms for every future Vocab word you add.











