Nested dir elements with CSS columns excessive CPU usage

Issue #7509865 • Assigned to Travis L.


May 10, 2016
This issue is public.
Found in
  • Microsoft Edge
Found in build #
Reported by 1 person

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Steps to reproduce


<body onload="s=’

The repro creates 256 nested <dir style=height:1;column-count:999> elements, which causes Edge to consume CPU. Remove either style property and rendering is instantaneous.

An HTML file that simply contains “<dir style=height:1;column-count:999>” repeated many times has the same effect (i.e. this problem is not cause by the Javascript for loop).


1 attachment

Comments and activity

  • Argh! repro in comment got truncated, see attachment (plz 2 fix diz k tnx bye).

  • Argh! Submit comment once, gets added twice!

                        Much bug!                                   Such hilarious!
      Many mistake!
                                               Big embarrassing!
  • Microsoft Edge Team

    Changed Assigned To to “Ibrahim O.”

    Changed Assigned To to “Travis L.”

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