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WebPagetest Forums - Same run is showing different viewPort sizes

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Full Version: Same run is showing different viewPort sizes
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hi ,
http://www.webpagetest.org/result/150326...8826bb273/

The same run is showing variable viewport sizes. At times it is showing a 3 column layout that happens when you have 1024x 768 and at times it shows the 4 column layout that shows 1366 x768 . What could be happening here?
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