[BUG] Plugin defined in typoscript can't properly set templateFiles.result

[l-rapp]

Given this typoscript snippet

lib.newsarea < plugin.tx_solr_PiResults_Results
lib.newsarea {
    extensionName = Solr
    pluginName = pi_results
    view.templateFiles.results = EXT:Resources/Private/Templates/solr/Search/NewsareaResults.html
    //OR
    view.templateFiles.results = NewsareaResults
    search.initializeWithQuery = Print
    search.showResultsOfInitialQuery = 1
}

and this setup

    templateFiles {
      results{
        availableTemplates {
            default {
                label = Default Searchresults Template
                file = Results
            }
            newsarea {
                label = Newsarea Template
                file = NewsareaResults
            }
        }
}

I would expect the resulting cObject on the page to use the defined alternative template, which works when it is added via backend as a normal plugin. For some reason, the typoscript / cObject approach ignores the desired template and refuses to render anything but the default one.

I know for a fact that the files are being read, as the search.* settings properly apply to the rendered results plugin. Only the template is being ignored.

Have I made a mistake in the definitions, or is this a bug?