Observed behavior. Because I have one Mac that is too old to learn new OS tricks, I noticed this:
Go to the context menu and hit “copy item link.” Paste it where you wish - in an existing document, a new document, or in an annotation to a document.
Under Mojave, you have a very nice link just as you would in a web page. The title of the item displays, underlined as an inline link, and the x-devon-item link is hidden away.
Under High Sierra, though, only the x-devon-item link is pasted, and it not clickable. The link needs to be manually created from there.