My Itemized deduction > standard deduction, but TT says that the refund is greater using the itemed deduction. Should I switch deduction types? Is this an error?

My itemized deduction is ~$14K. The standard for married filing jointly is ~29K. TurboTax has me taking the itemized deduction, saying that my refund will be ~$1K more. Should I switch to the standard deduction? I called and the "expert" said that this could have something to do with AGI or my $960 charitable donation but that didn't sound right. Wondering if this is an error in Turbotax and if I should switch to the standard deduction.