For grins, I decided to fly the 110 this morning. Something in the AAU1 beta and/or the most recent WT GNS is allowing the AP to play more nicely. I’ve been able to use the altitude controls with success.
EDIT:
I wanted to add that the Altitude hold adjustment keybinding doesn’t work for setting the target altitude; I had to use the physical control on the console. However, the VS hold can be set with a keybinding just fine.