Some lenders explicitly allow it, some don’t, some won’t notice.

First, let me say I'm not a lawyer, so in your hypothetical example your first call after talking to the tenant should be to an experienced landlord-tenant attorney in Georgia.Here's a great summary of the federal Protecting Tenants at Foreclosure Act of 2009 (PTFA), to which you are referring.That all said, there are a few reasons this worst-case scenario is not worth too much worry:No (sane) landlord is ever going to give an arm's-length tenant a 15-year lease for a fixed rent amount, and if they aren't arm's-length then PTFA doesn't require you to recognize that 15-year term.PTFA has a provision that the rent cannot be substantially less than fair market rent, and odds are good that won't be the case.I've never met a tenant who couldn't be persuaded to leave with financial incentives.

Make sure it explicitly explains the process for termination if you are unhappy with their services, but especially if they violate the terms of your agreement.3.

Was it explicitly stated within the lease that they were responsible for utilities?

Simple way to determine if transaction is OK is to make sure it is an "arms length" transaction, which means that no disqualified person is involved in transaction with the qualified plan, directly or indirectly.

Will add a clause to make it explicit that they're responsible for rest of lease until another tenant is found.

In Pennsylvania, a seller absolutely cannot EXPLICITLY kill a deal.

Whenever you see someone use words like "good time" or "bad time" or "good investment" or whatever, they're explicitly talking about 1 thing, but implicitly talking about multiple things. 

@Melody E Bergloff what’s bout the arm’s length rule, wouldn’t that come in play here?

Make sure it explicitly explains the process for termination if you are unhappy with their services, but especially if they violate the terms of your agreement.3.