What gameplay feature is this bug affecting?
Studding

What's the issue? Please include any error messages you receive and as much detail as possible.
I tried to turn off my public studding by setting both to zero and was told I couldn’t set my price below my minumum the first time I tried. This didn’t accure a second time. Everything acted normal when I tried again.

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
My king’s studding page.

Any screenshots you can provide us with?
I’m sorry, screenshotting this wasn’t my first thought. My first thought was “huh.. how odd.. will it work if I press the button again”

Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I set both my prices to zero and pressed update and was given the random error message.