You just made me realize that TurboTax 2019 didn't submit an IT-203-B with NY taxes! To be honest it lowers my confidence in TurboTax quite a bit. TurboTax waltzes through common questions, but once you get to even slightly tricky things (like IT 203-B or IT 203-F), it leaves you to fend for yourself.
I didn't experience delays with my returns last year (your mileage may vary), but I'm realizing now that Page 20 of the IT-203 Instructions does say:
If you earned your salary or wages both inside and outside of New York State, you must determine the amount that is allocable to New York State. This is not necessarily the amount shown in the State wages, tips, etc. box on your Form(s) W-2.
So basically "my W-2 said so" is no defense: you must use IT-203-B (and possibly IT-203-F, if you get stock) to calculate NY's share, even if your other state uses the W-2 "Stage wages" values.