If your setting in Settings > Taxes is set to assume "current tax law," then many, but not all, of the provisions of the TCJA will sunset and revert to prior TCJA tax laws. Specifically, the deduction will be calculated and then reflect the larger of the pre-TCJA standard deduction or your itemized deductions. The personal exemption will appear again after 2025 reflecting the pre-TCJA exemption.
However, the standard deduction and the personal exemption will continue to be indexed by the chained CPI, not the regular CPI, hence the real value of the standard deduction and the personal exemption decrease year by year since the chained CPI is less than the regular CPI.