During the prison stories chapter 3 on xbox one, while trying to complete the "build solitary confinement" with 10 solitary cells objective, I mistakenly made the entire structure "solitary, rather than the individual cells. Afte all cells were built, complete with solitary doors and toilets, the objective wouldn't complete.
I let a lot of time pass, but nothing changed.
With no option to demolish the floor plan, I was stuck with, technically, 1 large solitary cell with a lot of little rooms. Only fix I could think of was to start over again.