[wp-trac] [WordPress Trac] #16643: Page Parent Dropdown in IE8

[WordPress Trac]

#16643: Page Parent Dropdown in IE8
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 Reporter:  jlevandowski  |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  3.1.1
Component:  Editor        |     Version:  3.1
 Severity:  major         |  Resolution:
 Keywords:                |
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Comment (by azaozz):

 Investigating this further in IE8: the Slow Script error seems to be
 coming from the onclick event. Tested with about 300 pages, the page
 parent dropdown shows after some delay but trying to scroll it by dragging
 the scrollbar fails. However scrolling it with the mouse wheel works
 properly (no delay).

 The IE8 script debugging console shows the error as being in the `while`
 loop in `siblingCheck()`. This function was introduced in jQuery 1.4.3 and
 is used in (the rewritten) `sortOrder()` function.

 In 1.4.2 `sortOrder()` is using `createRange()` for IE, in 1.4.3 it
 switched to comparing nodes. We should report this upstream, seems like a
 "speed" regression.

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Ticket URL: <http://core.trac.wordpress.org/ticket/16643#comment:22>
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