did you make the safe harbor election regarding QBI. if you did, I would take the position that it is business income. if you didn't then the question arises as to whether or not the rental activity is a trade or business. I can't give a proper answer regarding this. you'll have to make your own decision. if it is not a trade or business you are not entitled to the QBI deduction and Turbotax may have been in error allowing the 179 in that prior year.
if you override line 11 you won't be able to e-file and TurboTax's accuracy guarantee is void. so you should really check with support especially if you made the safe harbor election.