More than likely the software is showing you the total of everything that you entered, without regard to items that have limitations. You likely have deductions that exceed the $10,000 in "SALT" limitations (probably state income and/or property taxes). When those are reduced to $10,000 and then your other items are added back in, it probably adds back up to a number less than the standard deduction.
If you have entries that add up to more than $10,000 for property taxes, or state income taxes (or the two combined) this is likely the issue.
