Same action called on property mapping errors with view.pluginNamespace
plugin.tx_<myext>.view.pluginNamespace one can have all plugins of an extension share the same prefix for form data, e.g. for having multiple plugins affect the same object.
However, if property mapping errors occur in this setup, all plugins show the same output (of the last plugin).
This error occurs due to the internal argument
__referrer having the same prefix for all plugins, thus the last one prevails and all actions are redirected to this referring request.