iOSMessageBox button keeps reverting back to "Cancel"

Hi. Is there a bug with the iOSMessageBox? Several times now, I’ve changed the property of the box to say “Ok” instead of “Cancel”, and it keeps reverting back to cancel. I’ve tried replacing Cancel with Ok in the left button property (right button blank) and also left button blank and right button with Ok. It seems to work well while testing, but after closing Xojo and coming in the next day, it went back to Cancel. Do I need to code it as such? Kinda seems pointless to have the property then.