layer at (0,0) size 834x585
  RenderView at (0,0) size 800x585
layer at (0,0) size 800x585
  RenderBlock {HTML} at (0,0) size 800x585
    RenderBody {BODY} at (8,8) size 784x569
      RenderBlock (anonymous) at (0,0) size 784x72
        RenderText {#text} at (0,0) size 768x71
          text run at (0,0) width 427: "This is capturing current behavior, but it's not clear that it is correct. "
          text run at (427,0) width 291: "It's not clear if max-height on a columns block"
          text run at (0,18) width 291: "constitutes a constraint on the columns or not. "
          text run at (291,18) width 477: "You obviously begin trying to balance, but only run into the constraint once"
          text run at (0,36) width 290: "the balanced columns exceed the max-height. "
          text run at (290,36) width 325: "It's not clear that you should suddenly shift to a fill. "
          text run at (615,36) width 132: "Our current behavior"
          text run at (0,54) width 512: "(which matches Firefox) is to just overflow without changing from balance to fill."
layer at (8,80) size 404x64
  RenderBlock {DIV} at (0,72) size 404x64 [border: (2px solid #000000)]
    RenderMultiColumnSet at (2,2) size 400x60
layer at (10,82) size 61x594 backgroundClip at (0,0) size 834x585 clip at (0,0) size 834x585
  RenderMultiColumnFlowThread at (2,2) size 61x594
    RenderText {#text} at (0,0) size 51x113
      text run at (0,0) width 43: "This"
      text run at (0,27) width 16: "is"
      text run at (0,60) width 51: "some"
      text run at (0,87) width 37: "text"
    RenderBR {BR} at (37,108) size 0x0
    RenderText {#text} at (0,120) size 51x113
      text run at (0,120) width 43: "This"
      text run at (0,147) width 16: "is"
      text run at (0,180) width 51: "some"
      text run at (0,207) width 37: "text"
    RenderBR {BR} at (37,228) size 0x0
    RenderText {#text} at (0,240) size 51x113
      text run at (0,240) width 43: "This"
      text run at (0,267) width 16: "is"
      text run at (0,300) width 51: "some"
      text run at (0,327) width 37: "text"
    RenderBR {BR} at (37,348) size 0x0
    RenderText {#text} at (0,360) size 51x113
      text run at (0,360) width 43: "This"
      text run at (0,387) width 16: "is"
      text run at (0,420) width 51: "some"
      text run at (0,447) width 37: "text"
    RenderBR {BR} at (37,468) size 0x0
    RenderText {#text} at (0,480) size 51x113
      text run at (0,480) width 43: "This"
      text run at (0,507) width 16: "is"
      text run at (0,540) width 51: "some"
      text run at (0,567) width 37: "text"
    RenderBR {BR} at (37,588) size 0x0