Why does the more expenses I include in the questions for rental property drove UP the Federal Tax Due amount in TurboTax Premier?

Why does the more expensse I include in the questions for rental property drove UP the Federal Tax Due amount in TurboTax Premier?  This is baffling.

I have two rental properties.  One has a profit and the second is currently taking a lost.   After I put in all the expenses for each property, I have an amount Total tax due of $3,175.  I decided to play around with adding more expenses, and I noticed that my Tax due went up.  When I removed all the expenses, both properties either show a profit or a larger profit, but the Tax Due went down to $2,765.  One would think that if I have more profit from the rental properties, I pay more taxes, and not less.  I'm totally baffled.

Can anyone help explain this?  Why would I want to report my expenses if it causes me to pay more taxes.