I've always used a blank page for homepage in the browser. Recently, my homepage acquired a little graphic "JP" image.
Here's how it looks.
As you can see, there's a red JP at the left of the tab (to the left of "about:blank").
That seems to have been picked up somehow from one of the bookmarks, as you can see in the image.
How do I get rid of the red "JP"? It's a minor annoyance to me.
Edited to enlarge the graphic.