What happens to the personal portion of property taxes when SALT limitation applies, shouldn't it flow to schedule A line 5b?

I completed the 8829 line 11 worksheet. Line 11a is zero and line 17a is $1,200.  On screen 29 I removed the real estate tax from indirect column and entered the $1,200 on the excess real estate taxes  line under Direct Expenses.  The $1,200 goes to the 8829 perfectly, but the $8,200 remainder does not flow to schedule A.

Do we need to make a manual entry of the personal portion of property tax on schedule A or is lacerte correct they do not get the deduction.  It seems like Lacerte's error messages are forcing them to use standard deduction since the personal portion of property tax is not flowing.

Thank you