LayoutView not promoted to correct class after Plugin initialization

[klayoutmatthias]

For details see this discussion: https://www.klayout.de/forum/discussion/2272/bug-bookmark-view-does-not-exist-anymore-in-ruby-in-klayout-28-6#latest

Summary: run KLayout with the following script in "-rm":

module MpluginEC

include RBA

class PluginECFactory < PluginFactory
  def initialize
    register(100000, "plugin_extern", "External\nControl")
  end
  def create_plugin(manager, root, view)
    return Plugin::new
  end
end

class PluginEC < Plugin
end

PluginECFactory.new

end

Load a file and in the macro IDE use:

RBA::Application::instance.main_window.current_view

This returns a LayoutViewBase object and not a LayoutView object as required. Without the plugin initialization, the LayoutView is returned.