I don't know about the slab cover fills, but for your wall Favorites goto:
Options > Project Preferences > Miscellaneous, hit the "Favorites Preferences..." button, and make sure "Height" is
not
checked under the Wall Tool. (This is a list of parameters that will
not
be applied with Favorites).
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004