User Interface Does Not Correctly Display Available Dates

I am having a user interface issue where the unavailable days are not showing correctly. For example, I have booked 4 nights (June 20-23); however, the UI only shows June 20-22 as unavailable. It is not until I try to book something for June 23 that it shows me it’s unavailable. Obviously the functionality is working correctly, but the display is not. It makes it look like there’s an error.