Here is an example in the image. I had looked in the history a while back. Later, when clicking on a link on my Start.me set of bookmarks to visit another forum, instead of a blank empty tab while the page loaded, an image showing my history was shown. Note, it doesn't have to be the history drop-down that appears, this was simply the easiest for me to capture as an example.

Another example, sometimes I might have been using a Media Player tab and later each time I click on website links, the new tab shows a static image of how the media player looked, while the website loads in the tab.
I hope that all makes sense, and while not critical at all, it just doesn't feel right.