The PageHeadState gave multiple problems and has been deprecated. With the new PageHeader component there are better ways to switch between header modes, see the example in this blog post: https://developer.ubuntu.com/en/blog/2016/02/24/pageheader-tutorial/
The PageHeadState gave multiple problems and has been deprecated. With the new PageHeader component there are better ways to switch between header modes, see the example in this blog post: https:/ /developer. ubuntu. com/en/ blog/2016/ 02/24/pageheade r-tutorial/