Dang it, a big menu popped up showing me similar posts and I couldn't get rid of it. Anyway, the fill for the Wall End tool is a drafting fill instead of a cut fill so when you set a Graphic Override for no cut fills the Wall Ends will still have their fills.
Mac OSX 10.15.7
AC25, Artlantis 2020, TwinMotion
iMac Pro 2017 / 8-core 3.2 GHz / 32GB RAM