The top three cities with the most home-purchase cancellations are in Florida, according to Redfin.shutterstock.comFlorida's housing market is seeing a wave of buyers get cold feet.In June, 21% of home purchase agreements fell through in Orlando, Jacksonville, and Tampa, Redfin found.Home prices, meanwhile, are dropping in the state as supply outpaces demand.Florida's housing market is facing a wave of "nightmare scenarios," with a growing number of home deals falling through as buyers get cold feet.In key metros like Orlando, Florida, and Tampa, around 21% of home-purchase agreements were cancelled in June, according to data from Redfin.