TYPO3.Fluid

Since r2895 ViewHelpers that belong to the same ViewHelperNode (inside loops) are only instantiated once. This leads to the side-effect, that $this->tag points to the same reference.
If a tag attribute is set it won't be resetted when initialize() is called.

Example:

<f:for each="{0:1, 1:2, 2:3, 3:4}" as="foo">
    <f:link.action class="{f:if('odd' condition='{foo} % 2')}">{foo}</f:link.action>
</f:for>

Expected result:

<a class="odd" href="viewhelpertest/standard">1</a>
<a href="viewhelpertest/standard">2</a>
<a class="odd" href="viewhelpertest/standard">3</a>
<a href="viewhelpertest/standard">4</a>

Actual result:

<a class="odd" href="viewhelpertest/standard">1</a>
<a class="odd" href="viewhelpertest/standard">2</a>
<a class="odd" href="viewhelpertest/standard">3</a>
<a class="odd" href="viewhelpertest/standard">4</a>

Solution:
Reset TagBuilder instance in initialize()

And we should check, whether there are more side-effects!