Show translations on hover in completion screen
In the "You completed X words!" screen, you show a series of words that have just been covered. It would be nice if the standard "translate on hover" pop-up could be active in this view as well, as this is a good opportunity review and extra reminders.
As a side-note, I'm pretty sure I've noticed words in this summary that were in fact not covered in the lesson. Will give more details on that if it keeps coming up.