Hyatt used to let you book a ‘studio’ room at their Hyatt Residence Club (timeshare) properties for 12,000 points per night — flat — regardless of property. The price was the same regardless of property and had remained fixed this way for many years. Higher level rooms were available at fixed prices as well.
When Hyatt made changes to award prices at several hotels August 1 they also made changes to the redemption structure for Hyatt Residence Club properties. Only they didn’t announce those changes in advance.