Comment 7 for bug 1790352

Okay, I think I figured out part of the problem.

I can confirm that this behavior does not work, however, if you middle click on the "Bookmarks" menu then use the middle click to select a specific bookmark entry, it works. Does that match your experience? Can you try it?

I think I remember a commit where we change some of the click behavior. This bug must have been introduced then... I'll try to bisect the commits, but I think it was a long time ago.

So, as a workaround for the time being, whenever you intend on opening a bookmark in a new tab, you should also middle click on the menu bar entry for "Bookmarks".