I think the 3,2,1 was throwing me when I did it, but when I realized I didn't have to wait for it to finish and remember them I cleared it first try.It should reset correctly, with the countdown, if it doesn't then it's a bug.
It won't be a new one, each round always loops, it starts at 3,2,1 then it starts and finishes at the "Emoji", then it will restart.
You can let it run through as many times as you want and even input the commands as it plays.
If the reset isn't working as it should, then we will look into it, all you technically need to do now is to wait until the 3,2,1 starts and you know you are at the start of the sequence.
Solution for the puzzle:
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Inputting as the images flash on screen is the secret tech.