I have one gripe with Learn Mode. When I learn new entries, I usually do so from a pretty big stack (~500 entries) and use the Learn dialogue until I've encountered 10 that I didn't answer correctly at first sight (I'm an advanced learner). The ones I do know go straight into level 5, where I start off, and the idea is that the rest should go all the way down to Level 1 (Leitner system). This works fine, BUT:
there is no stop button. When I've collected 10 entries, I want to review them over and over until I get them right, which is when I declare them as unknown. However, as it is now, a new entry always butts in, crowding the list to the left. The only solution to this is pressing the up button ~450 times, until there are no entries left in the cue.