height calculation hidden element bug cause slidedown jump

[sabithpocker@…]

960px wrapper. div to be animated has no width and is inside 200px column with position 'static'. slide down calculates width by making position of div 'absolute', but then it inherits width of wrapper960(position:relative) instead of parent 200px column(static). This results in wrong height calculation. height calculation is guessed to be following: make position of elemnt absolute make its visibility hidden make its display normal. now take the height. guess of solution: make position of elemnt absolute make parent position relative? make its visibility hidden make its display normal. now take the height.

[jitter]

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[trac-o-bot]

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[cameron@…]

I'm not the original reporter, but I think I'm experiencing the same problem.

​http://jsfiddle.net/XQzMU/2/

Note how it jumps at the end. Setting position: relative on #container fixes it.