After doing the following search, I kept wondering why search bookmarks were not appearing (in case you wonder it's supposed to be in the vertical scroll bar of the resource):

After playing with settings, looking in the help file for answers, I finally realised they are there, just very faint and hardly visible. They come into focus when you hover on them as this second screenshot shows (pink lines show preview window of result locations):

I think it is a useful feature to quickly check other hits, but it has to be made more visible than that. I would suspect many don't even know it's there at all.