1) Yes, I am in beta now, though some of them I might have marked when I was outside the beta yesterday 2) No, I'm not marking them for for adding into the dictionary, I'm simply clicking "Save custom definition" 3) Yes my change appears (for the one I modified this morning), which is strange because some of this words I am under the impression I had already fixed yesterday, so this makes me doubt myself... I guess I'll have to keep my eyes open for this going forward
Well, here is my guess. When you start a quiz (that is, push the study button), it gathers a lot of data in preparation. Some of this data is added to when you load up each individual question, while some is pulled from that initial preparation. My suspicion is that when the quiz is made, the definition is X. You add custom Y to the term when you are reviewing them, and it uses that in all future quizzes, but it does not have it inside of the quiz itself.