The program is correct.
When you tell the program you only own 50%, it gives you the option to let the program so the math (you enter 100% and then it multiplies it by 50%) or if you want to enter YOUR income and expenses (you enter 50% of the total).
The "Learn More" link clearly tells you this only pertains to expenses, and that YOU need to only enter YOUR reduced 50% of the Basis for assets for depreciation. So if the home cost $100,000, you would enter that it cost YOU $50,000.
When you do that, there is no reason to override.
