I guess it happens, but I don't have to like it
Had a vacant rental that we put online, a great applicant paid the deposit, prorated rent and was excited about moving in. Then, about 30 minutes later she called and said that her current landlord had changed their mind about selling the house she was renting and wanted her to stay while they dealt with wife's health issues.
Long story short, she needed to break her brand new 30 minute old lease. We bit the bullet and gave her all her money back, minus the background check fees. We could have kept more, but the house will rent pretty quick again, but I'll be losing several days rent at least.
UGH!