Feature index fails to appear in extension-rendered pages

[prushforth]

I believe the extension adds and then removes a <map-options> element containing the parameters set in the extension, including feature indexing. If the extension synthesizes a Web page around a MapML / XML resource, it may be that its not pushing the <map-options> into its own page.

Steps to reproduce:

Enable rendering and feature indexing in the mapml-extension

Open an extension-rendered page, like this one

Hit Tab to focus the map.

Expected result:

Feature index is displayed.

Observed result:

The map is focused but no feature index is displayed. If you hit Tab another time, the features of the map are focused, indicating that the feature index has been skipped / missed.