Certain words repeated too often in Lesson Practice
I've had certain words repeated everyday in the practice sessions. 'Der Anruf', 'the call' in German 4 times in 4 days. And it's not part of a sentence to test other words either - its the basic picture question.
There are other words as well that come up far too often while others I actually need to practise are ignored.
I think this stems from a bug in how quickly certain words drop in strength. Some words it seems decay at least 2 bars in a single day!