Unfortunately yes. The effects are played in the same order the cards were placed so if the first played card was a mistake, you have to take them all back and place them in a different order. If only the penultimate card was a mistake, you can take back just the last two. If more time, it could be solved by a "card row" visible for a player in which they could switch the order of cards. Maybe next time.
Thanks for the positive review on the idea! :)
PS: Not sure about the Linux, maybe another member of our team could know what's going on.