Correction, I think this should be:

    <%= _(filter.resource_class.try(:humanize_class_name) || filter.resource_type || '(Miscellaneous)') %>

Though it exposes some bugs in a) the model extractions, which seem to not be adding namespaced stuff (e.g. Host::Managed, audits), and b) we're missing some English translations.  Both of those can be fixed though.