The payroll expense section in the "profit and loss detail" changed to gross pay only and does not show net pay.

It should be gross pay + the employer's share of payroll taxes.

how can you make it show the payroll tax deductions?

You can see the payroll tax deductions in the payroll liability account(s) and on reports.

I would like to know how to make payroll tax deductions show in the profit and loss detail only.

They aren't an expense.  Let's say you pay someone $500 gross -- that is payroll expense.  The deductions for federal & state income taxes and fica & medicare are posted to payroll taxes payable (a liability account).

That is what i've been reading through my research, but previously before today, it did add tax deductions before. It always showed the net pay instead of the gross pay previously.

Perhaps you were looking at it in the check register or elsewhere?

No, it was always "profit and loss detail". Thank you for trying to help anyways.