Deductions & credits

Well, my spouse was a full-time student indeed (remote learning overseas, so she wasn't eligible for education credits). It was 10 months in 2019 and I have one child under 13.

 

What puzzles me, is why am I getting any credit ($48) since all I paid was from pre-tax FSA? And where the amount of $5,238 comes from. I would expect not getting any credits.