#3 Choice still marked wrong after choosing correct button

[Tom Johnson]

After choosing the correct button, the choice may still
be marked wrong. This has been determined to be
caused by the following reason. Since katakana and
hiragana have the same romaji equivalents, if a romaji is
displayed in the "Translation given, guess word" mode,
for example "ha", there may be choices for both the
katakana "ha" and the hiragana "ha", but internally the
program will only recognize one of these choices as
correct.