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https://issues.apache.org/jira/browse/TOBAGO-509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570723#action_12570723
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Volker Weber commented on TOBAGO-509:
-------------------------------------

Can you test this with a non png image? 
If its working with gif images this may be a problem with the 
png transparency fix. 

> images doesn't show when in a tabbed pane not visible at page display
> ---------------------------------------------------------------------
>
>                 Key: TOBAGO-509
>                 URL: https://issues.apache.org/jira/browse/TOBAGO-509
>             Project: MyFaces Tobago
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.0.12
>            Reporter: Zied Hamdi
>
> Hi ,
> I have wrote a test case for this example because it isn't easy to explain. 
> This test case isn't maybe the only one, but this happens in my example:
> - You will not see the image because the tab that holds it is not the first 
> one.
> Now if the tab contaning the sheet is selected. When I click on a link that 
> refreshes the page (ex: a postback), the image displays correctly.
> <tc:page
>       xmlns="http://www.w3.org/1999/xhtml";
>       xmlns:f="http://java.sun.com/jsf/core";
>       xmlns:h="http://java.sun.com/jsf/html";
>       xmlns:t="http://myfaces.apache.org/tomahawk";
>       xmlns:tc="http://myfaces.apache.org/tobago/component";
>       xmlns:tx="http://myfaces.apache.org/tobago/extension";
>       xmlns:c="http://java.sun.com/jstl/core";>
>       <tc:tabGroup>
>               <tc:tab>
>               </tc:tab>
>               <tc:tab>
>                       <tc:sheet
>                               value="#{data}"
>                               var="x"
>                               columns="*;*">
>                               <tc:column>
>                                       <tc:link image="image/edit.PNG" />
>                               </tc:column>
>                               <tc:column>
>                                       <tc:out value="no image" />
>                               </tc:column>
>                       </tc:sheet>
>               </tc:tab>
>       </tc:tabGroup>
> </tc:page>
> The unique workaround I found is to put a label instead of the image, that's 
> why I consider it Major.
> Regards,
> Zied Hamdi

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