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https://issues.apache.org/jira/browse/WICKET-4286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171149#comment-13171149
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Dan Retzlaff commented on WICKET-4286:
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There are two concepts here: "touched" pages and "dirty" pages. Simply
retrieving a page from the page manager "touches" it, scheduling it for
serialization into the page store at the end of the request. The question is
whether it updates the original page store entry, or goes into a new entry. The
page gets a new page map entry if and only if it is marked "dirty" which is
triggered by component hierarchy change, component model change, or explicitly
with Page#dirty(). However, WebPage#dirty() has a special case which prevents
AJAX requests from *ever* marking a page dirty.
So after the request that originally created your wizard's page, there must be
another non-AJAX request which dirties the page and advances its identifier
past the one in the browser address bar.
> ListView causes page ID increment
> ---------------------------------
>
> Key: WICKET-4286
> URL: https://issues.apache.org/jira/browse/WICKET-4286
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.5.3
> Environment: any
> Reporter: Mark Lichtenberg
> Attachments: ajaxtest1.5.3.tar.gz
>
>
> A ListView with setReuseItems(false) causes the page ID to increment when the
> page is reloaded or the back button is pressed. This new ID is not reflected
> in the URL so Ajax actions against the new ID are lost when navigating away
> and back again.
> Steps to reproduce in quickstart
> 1) Load quickstart project in browser
> 2) Click "Link to Other" then click browser's back button.
> 3) Notice the log statement indicates the HomePage ID is 2, yet the URL
> remains at ID 0
> 4) Click "Ajax Increment Link" a few times
> 5) Click "Link to Other" then click browser's back button
> 6) Notice the counter is at zero, and subsequent clicks to the "Ajax
> Increment Link" start from zero. The current page ID output in the log is 4.
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