I have been playing for many years, possibly since the launch of the game. I have on many occasions sped up accidentally and spent hard earned gems pointlessly. Today topped the cake. I was expanding and was tapping the pay coins but the screen moved and I tapped on skip button for the compasses. Not sure exactly how many gems I spent but looking at neighbouring plots, it was about 1500 gems. And to think I had more than enough compasses in storage! It is absolutely heartbreaking and might be the final accidental gem loss that makes me abandon my kingdom for good.