Addon Version
8.1.3

I seem to remember running into this issue before and I can't remember if we discussed it. Anyhow, the behavior of the default UI is to hide the AutoCastable texture when the AutoCast state is enabled and its respective frame is shown. Dominos does not currently follow this behavior and the AutoCastable texture is always visible. If this is intentional, perhaps it should be optional.

I'm not sure I'm able to verify this one. Here's an auto-cast pet spell on the stock action bars:

And here it is on Dominos:

I'll check when I get home. I could have swore it hides the AutoCastable texture. Maybe my age is catching up with me and my brain went on vacation while I was testing. :p

I looked through the code on my USB and it appears you're correct. I guess that means I'll have to have Masque handle it.