Started discussion in elastic/kibana#67259 (comment)
@majagrubic :

When selecting the fullscreen option from the menu and clicking Back in the browser, I'm taken back to the Advanced Settings, ie. the last page I was on before Discover. I would expect this to take me back to Discover.

@chandlerprall

Would need to hook into the html5 history api for that. I don't know if that's functionality we'd want in EUI, though it seems like it so it would be consistent between all fullscreen grids.

so let's start to discuss