Does repeat loop misfuction?

The loop doesn't miss repeats. But if you are picking a random instance 3 times, it's possible that sometimes the same instance will be picked again. If you want to avoid this, you need to somehow mark already picked instances, for example by setting a boolean variable isPicked=true. Add a condition "isPicked is not set" before "Pick random Cards instance".

Or you might use "Cards MoveTo is not moving" condition.

I am not aware that it would fail, I use a bunch of loop functions and haven´t seen any issues. Also I think you misunderstood what dop said in that post.

If your loop fails, maybe there is something wrong in your events?

The loop doesn't miss repeats. But if you are picking a random instance 3 times, it's possible that sometimes the same instance will be picked again. If you want to avoid this, you need to somehow mark already picked instances, for example by setting a boolean variable isPicked=true. Add a condition "isPicked is not set" before "Pick random Cards instance".

Or you might use "Cards MoveTo is not moving" condition.

Thanks guys, i really forgot to set the "available" instance variable to false.