As reported in #46939 (comment) by @talldan

each item in the off canvas is announced as a link, but those links don't do anything when selected (the functionality was intentionally turned off, but the element doesn't indicated this).

Not sure what the best solutions to this is, possibly the href shouldn't be defined, but it might be weird that they're links.

Consider making the Edit button the link and removing the affordance from main "node".