I've found what appears to be a bug in the latest Release Candidate (184.108.40.206 Beta (955095) 64-bit); the 'Link to Document' option seems to be permanently greyed out and unusable (even once some text has been selected).
I use this feature heavily in my workflow - I'm writing a graphic novel using the built-in Comic Script template, and I have a page-by-page breakdown document. The number of each page in the breakdown is used to link to that page's full script. I have the breakdown open permanently in split view, and click on the page numbers to jump to each individual script page as I'm writing. This lets me have an overview of the whole story on one side of the screen, while using the right side of the screen for active writing.
Am I doing something wrong, or has the option been disabled erroneously?
I can confirm this issue is present on my install as well, so rest assured it's nothing you did.
Windows 10, v1909 OS Build 18363.836 Version: 220.127.116.11 Beta (955095) 64-bit - 13 Jun 2020
This is one of my many most favourite features on Scrivener, so I'm sad to see it sneak away on me!
I don't know how long the bug has been there for as I hadn't had much work time for a while. I only noticed it after I used "update document links to use target titles" - which still works. I doubt that's relevant, though.