Just a few bugs I've come across since I started using renshuu (windows desktop, firefox):
1. If you complete a studypad quiz, then (on the kao coin page) press the cog settings button next to retake quiz, then X out of it without changing anything and press retake quiz, an error box will pop up: "Sorry, but you have chosen an invalid quiz method. Please look at your settings and try again." If you then try going back into the settings and X out again a few times (without changing anything), pressing the settings button will start giving you an empty box titled "Quiz options" that you can only X out of. At this point both the settings and the retake quiz buttons are non-functional (they will both keep returning their respective error popups). I don't think the quiz settings matter, but just in case, I used flashcards kanji compound -> mult. choice def.
2. During a grammar quiz, if you have 'When to display quiz results' set to 'next to the following question', and the current problem on the left is a sentence jumble question: Click on the grammar link on the right (for example, the なさい link next to mastery and above 'Do A (instruction)', so that it opens up the grammar instructions popup where you can see conjugation tables, sentence examples etc. Now X out of the popup. The sentence jumble words can now not be moved around anymore (they can only be left clicked to put them in the first possible slot, or left clicked back to the bottom). This can be fixed with F5 (refresh).
3.) The N4 'Giving Commands' lecture has an extra empty page at the end. When clicking continue to quiz or return to fundamentals it will empty out the bar and move to a new, empty page. If you press next again it will continue correctly.
1. When you click on the cog it seems to nuke the form required for the loadQuiz function. I assume that's why it doesn't work. If I paste it back manually it works. As long as I do it before I trigger the error (press "Retake quiz").
3. The custom data attributes seem wrong. I don't feel like digging deeper, but if you change this: data-part="1" data-parts="2" to data-part="1" data-parts="1", it works as expected.
A related minor issue: On the last page of "What are hiragana and katakana?", if you press back once, what's supposed to be "Next" changes to "Return to fundamentals". Here it's just a visual bug.