Downloaded my W2 using TurboTax - find W2 feature.
Filed in Two states. The 2nd state came up with me owing $XXXX. Looked at the W2 paper copy and it showed $XXXX+ paid to second state already. TurboTax did not populate the "State Taxes Paid" for the second state. I had to look through the forms to find that error. (none of the TurboTax "reviews" found it either). This is a fairly significant bug and could have cost me $k's had i not caught the error by going through the forms (not something i've needed to do in the many years I've been using TurboTax).