I work in CA and my husband works in NV (no state tax), when i entered his second W2, NV income only, our owed to CA taxes increased. Why would this happen?

I am also confused as to why we owe CA so much more after having taxes taken out like normal all year. We are non residence of CA we live in NV, and all the information I've looked up for my CA income is saying I should not owe CA anything but my est right now is owing them over $150.