eZModule::setCurrentView sets the active view by setting a global variable:

$GLOBALS['eZModuleCurrentView'] = $name;

On the other hand, the view is retrieved using an index of this global variable:

$currentView = $GLOBALS['eZModuleCurrentView'];
if ( $currentView !== false )
    return $currentView['view'];

No can work. Patch attached.

(not a blocker at all, since the method isn't used, except in new tests we're writing).