If you give an incorrect answer to a flashcard I click
the next button to move on to the next card. While an
answer to that card the card is changed on me.
It seems that there is a timer that changes the card
after an incorrect answer. That timer will change the
card regardless of whether the user has clicked the
next button to move forward already.
The timer should stop if the next button is clicked.
Fixed in the upcoming version (probably 1.0.2).