"inappbrowser" plugin with "location" attribute issues in wp8.1

according to this
https://github.com/apache/cordova-plugin-inappbrowser/blob/8ce6b497fa803936784629187e9c66ebaddfbe1b/doc/index.md

it said...
location: Set to yes or no to turn the InAppBrowser's location bar on or off.

but I tried in wp8.1，no mater yes or no，seem the "location bar" never show
if it is because this attribute not supported by WP8 yet ?