https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/In-Aut...
I have searched and found this, metioned need Service Pack 1 to fix.
I have service pack 2 installed, still have this problem, is SP2 covered SP1?
The attached shows plines are fade, hatch are at same layer as pline, but doesn't fade.
btw: xref fade control does same, not reflected in hatches.