Pay Type Auto Pay Method B not calculating correct Supplemental Tax Rate for CA

Hello,
We have a number of Pay Types set up with an Auto Pay Method = "B", which means wages paid with that PDBA should be taxed at the Supplemental Rate. However, our EEs in CA are being taxed at the regular SIT rate of 6.6% and not the correct supplemental rate of 10.23% on their Bonus checks. I haven't found anything in the JDE setups that would cause this, and it's possible it's a Vertex issue, but wanted to ask to verify there isn't something else I might be missing here? Suggestions?

This is only happening for our EEs in CA and it is showing up on all our Pay Types with an Auto Pay Method of "B".