I downloaded the binaries and installed on two different M1 macs, one macbook M1 still running OSX11.0 with SC in Rosetta mode and one Macmini running OSX13.1 in ARM mode - it works like a charm on both.
That’s very reassuring, thanks for the feedback!
I was also able to use VST and VST3 plugs which did not make it in the previous version.
That’s great to hear as well!
I assume you have actually downloaded VSTPlugin v0.6-test1 and accidentally posted in the wrong thread? (Here’s the thread for v0.6-test1: VSTPlugin v0.6-test1)
I was wondering if there is/could be a method to close an editor window
VSTPluginController.editor has a boolean argument 
And would it be technically possible to embed the editor in a SC view? (I suspect not…)
Short answer: This is not possible, I’m afraid, because the SC GUI and the plugin UI live in different processes.
Long answer: It is technically possible to embed a window from another process. In fact, the Help Browser is actually a separate process (QtWebEngineProcess) whose UI is embedded in the SC IDE. However, sclang itself does not provide an API for embedding external windows into views, so practically it is not possible.
If there are any more questions, let’s continue the discussion in VSTPlugin v0.6-test1!