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https://issues.apache.org/jira/browse/ISIS-731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Haywood closed ISIS-731.
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> Bulk actions broken... the logic to re-execute the action fails
> ---------------------------------------------------------------
>
> Key: ISIS-731
> URL: https://issues.apache.org/jira/browse/ISIS-731
> Project: Isis
> Issue Type: Bug
> Components: Viewer: Wicket
> Affects Versions: viewer-wicket-1.4.0
> Reporter: Dan Haywood
> Assignee: Dan Haywood
> Fix For: viewer-wicket-1.4.1
>
>
> ISIS-718 seems to be the culprit; we clear the action model's arguments for
> an action panel because it may get reused, however this same action model is
> cached by the collection model of an action that returns a standalone
> collection, and re-executed after the bulk action is performed. This results
> in a NPE, because those arguments were cleared.
> The fix (a fix) is for the collection panel to clone the action model.
> This issue discovered during voting for 1.4.0; rather than pull that vote,
> suggest we fix in a patch release 1.4.1
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