I have not found the option of opening a preview page in a new windows on iPadOS, i don’t know if I haven’t looked good enough or the option isn’t there.
I found the option to open a Draft in a new window, but not the preview page, and I’m not talking about the live view found in the left bottom menu, I mean from an action.
Since the realice of the linking drafts I’ve been wanting to do this.
That’s about all there is to a preview. This is equivalent to a preview step in an action.
It’s a preview. What JavaScript are you expecting to run on a preview?
Yes. You are previewing the file with that preview.
It sounds like you are thinking of a transclude preview like the one Greg created, but that’s a very special case solution, not a standard preview. You can build all sorts of special case, custom previews with an action, but that is custom, not standard, and so is not an option for the standard side-by-side preview. Not currently at least.
It sounds to me like you want to request a new feature to support action previews in another window.
I don’t think Greg has added anything (action step parameter, scripting option, URL scheme option, etc.) to support that on the iPad in the last 5-6 months, so apart from on macOS where there is a keyboard shortcut for the “Show Preview” option (which spawns a new window), I don’t think that there is yet.