I am testing 2.1.0
When adding categories and enter the Permalink slug, example, /menus/pizza_bar it shows on the site as /local?location_id=11, this is the same for all categories.
The Permalink is enabled in settings but none of the URL's are showing friendly, menu page, categories etc.
When I add or edit a permalink slug for categories the error log shows the following:
ERROR - 2016-06-08 16:37:06 --> Could not find the language line "text_filter_status"