Ctrl+Z allows you to earn more killstreak with the same correct answer

[DeutscheGabanna]

Even though you can easily cheat with this add-on by answering "Correct" every time, there's a clear bug that results in more killstreaks even for honest Anki users.

Simply going back to a previous card with Ctrl+Z (for example to change tags) and pressing "Correct" again enables you to earn infinitely more killstreaks on that card, as long as you keep repeating the procedure.

For someone repeatedly using the Ctrl+Z feature it's a big problem as it skews their results - and they may not be aware of it happening, which is even worse.