Hello, I’ve just installed macOS 10.14 Mojave beta 10, and have just installed the 1.11 beta. As far as I can tell it seems to function okay. There are however some coloration issues with the tabs as shown here…
Strangely enough the problem with the tabs appears to have cleared up all by itself! I’ve still got the problem with the Copy, Cut and Paste menu options, though.
It looks like the full version of Mojave is almost (later today, possibly) upon us, so we’ll see what happens there!