State tax filing

This solution must not apply to Illinois.  The IL Dept of Revenue told me that, even if a full-year non-resident, you still pay Illinois tax on Unemployment that was paid from Illinois.  The funny thing is that I cannot find that anywhere in IL documentation, and the IL Dept of Rev cannot point to it either.  It would be nice to know if I should pursue unemployment compensation tax withheld with Illinois.  (I lived in Texas for the full 2022 tax year).