Which, for the gold standard, is still rather shocking.
Since the industrial revolution productivity has actually been increasing and automation continues to make this happen.
If you don't have a mechanism for productivity increase matching your inflation it's just making whoever is creating the new money temporarily proportionally wealthier until the money spreads everywhere.
Well only with a fairly fixed amount of gold available. If suddenly a vast new supply of gold is discovered, its not shocking that there would be inflation.