Hi, thank you so much for this detailed breakdown, this is incredibly helpful !
The color/shelving bug is a great catch, I hadn't realized a naturally red bottle placed incorrectly becomes indistinguishable from a correctly placed one. That's going to be fixed with a placement indicator that's independent from the bottle's own color (outline or icon instead of a color shift).
I'll also look into a more intuitive color-per-symbol association like you suggested, alongside spacing the colors of neighboring rows enough to stay readable.
The volume sliders not fully muting is a bug, thanks for flagging it.
On the sorting queue: you're right, forcing a strict FIFO order with no way to set a bottle aside or pick a different one is more frustrating than relaxing, that defeats the point of the game. I will add a way to freely choose which bottle to sort next, and a way to put one back for later.
Same for large-scale mistakes, a way to send incorrectly placed bottles back to the pile instead of restarting is a fair ask, I'll add that.
And fair point on the pause timer versus the "no timer" pitch, I'll adjust the description so it doesn't overpromise.
Really appreciate you taking the time to write all this out!