It is possible to navigate to a lot of places with the editor open. Note that the editor does contain a link to the thing you were replying to when you invoked the editor, that is:
- the topic
- the post (if you happen to be replying to a specific post)
Screenshot demo:
So if you get lost, you can click on the link at the top of the editor / composer, where I have circled.
Also, re: the touchscreen / keyboard combo devices, this is a browser limitation that I suspect we’ll be able to conquer over time. Apple insists that such devices do not exist… 