Swiping right doesn't always work on flashcards

We've noticed users occasionally report that swiping right doesn't always work. In testing, we found it happens when:

• Starting the swipe from the right side of the screen - for some reason the technology only seems to identify a swipe right when your thumb/finger starts on the left side of the screen.
• Swiping too fast i.e. not keeping your thumb/finger on the screen for long enough.

Learners also occasionally forget to tap to reveal the answer before swiping.