Extbase MVC Framework

I built a widget that renders a breadcumb menu. In the widget template i use the ActionLinkViewhelper to render the links. This works fine in the Frontend, but in the backend it produces frontend specific namespace (tx_ext_plugin) instead of the backend namespace (tx_ext_web...).

I nailed the problem down to the method Tx_Extbase_Utility_Extension::Tx_Extbase_Utility_Extension():

When it is called from the method Tx_Fluid_Core_Widget_AbstractWidgetViewHelper::initializeWidgetContext it gets the namespace from $frameworkConfiguration['view']['pluginNamespace'] and works correctly.

When it is later called from the UriBuilder inside an ActionViewhelper (inside the widget template) $frameworkConfiguration['view']['pluginNamespace'] is missing and the default namespace is returned.

Sadly i cant find where $frameworkonfiguration or $configurationManager is reseted between this two calls.