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https://issues.apache.org/jira/browse/MYFACES-3574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13911359#comment-13911359
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Werner Punz commented on MYFACES-3574:
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There was an issue caused by a chrome bug, which was affecting the viewstate as
well besides the issue mentioned here, this issue is fixed for newer versions
of myfaces, please update to MyFaces 2.1.14 or later.
See also https://issues.apache.org/jira/browse/MYFACES-3835
> Update of 'javax.faces.ViewState' input elements fails
> ------------------------------------------------------
>
> Key: MYFACES-3574
> URL: https://issues.apache.org/jira/browse/MYFACES-3574
> Project: MyFaces Core
> Issue Type: Bug
> Components: General
> Affects Versions: 2.1.7, 2.1.8
> Environment: Internet Explorer 7
> Reporter: Mircea Toma
> Assignee: Leonardo Uribe
> Fix For: 2.0.15, 2.1.9
>
> Attachments: MYFACES-3574.patch
>
>
> The issue resides in the JS code that is responsible for updating
> javax.faces.ViewState key in the hidden input elements.
> In IE7 during the second update the lookup for the 'javax.faces.ViewState'
> named input element fails. The element[name] syntax is used for the lookup
> which is known to fail for elements with complex names (such as
> 'javax.faces.ViewState').
> When the lookup fails to find the input element a second input element is
> created which will contain the new javax.faces.ViewState value. The next
> submit will send two 'javax.faces.ViewState' parameters but only the first
> one (the oldest) is read by the server state manager . This old key is not
> known to the server anymore and this causes a ViewExpired exception to be
> thrown on the server.
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