2024 Solo 401(k) limit in Turbo Tax correct?

In a nutshell my combined employee/employer contribution limit in a solo 401(k) should not allow me to exceed $69,000 for employee/employer contributions.  I contributed $23,000 + $7,500 for a 50+ catchup and when I checked the "maximize" calculation box for my profit sharing amount, it's telling me I can contribute $38,850 (for a total of $69,350) instead of $38,000 (for a total of $69,000.)

 

I know the extra $350.00 is not a big difference, but was curious if this is a calculation bug in Turbo Taxbor if the there was another legit reason for the extra $350.00 to be added into the calculation.