Variable not passed from Layout to Template

[Oktopuce]

I have a problem passing argument from a layout to a template.

I have this code in layout file myext/Resources/Private/Layouts/Layout.html :

<f:for each="{news}" as="newsItem" iteration="iterator"> 
  <f:debug title="Section content newsItem">{newsItem}</f:debug> 
  <f:render section="content" arguments="{newsItem: newsItem}" /> 
</f:for>

And this code in Template file myext/Resources/Private/Layouts/Template.html :

<f:layout name="MyLayout" />

<f:section name="content"> 
  <f:debug title="Section content newsItem">{newsItem}</f:debug> 
  <f:render partial="ListItem" arguments="{newsItem:newsItem}" /> 
</f:section>

{newsItem} is filled in layout but not in template, I used TYPO3 V13 with latest version.
It used to work with TYPO3 V12.

[s2b]

I was able to confirm this in a TYPO3 v13 project. It seems to me like the variable scope of sections is wrong in that case: All variables of the template are available in the section.

If that behavior is confirmed, I'm not sure if we can fix that in Fluid 4, since there might be a lot of people relying on that. Maybe we can at least make the f:render  variables available by merging them. That would be quite unfortunate...

As a first step, we need a phpunit test (probably functional) to confirm the issue.