I suspect the problem is creating only a little bit of inflation. Hyperinflation is easy, just ask the Weimar republic.
So they ended up printing more and more till, it all corrected at once and hyperinflation was already here before they could roll back their currency printing machines.
They took a practical approach to managing inflation yet paying off debt obligations with more currency but didn't realize it all could backfire - they didn't do something as stupid as others will have you believe.
Zimbabwe faced similar problems after disowning their most productive agricultural providers, reducing supply.