layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x571
      RenderBlock {H1} at (0,0) size 784x114
        RenderText {#text} at (0,1) size 778x112
          text run at (0,1) width 720: "This tests for a bug when performing a FormatBlock"
          text run at (719,1) width 9: " "
          text run at (0,39) width 511: "inside a body with no visible content. "
          text run at (510,39) width 260: "This text should be"
          text run at (769,39) width 9: " "
          text run at (0,77) width 287: "inside an h1 element."
caret: position 132 of child 0 {#text} of child 0 {H1} of body