If I am in edit mode, the page title is greyed out and I cannot even select it to copy it.
Topic on 2017 wikitext editor/Feedback
Same problem here: this is a problem for template edition, when I frequently have to copy-paste the title. As a workaround, I use the URL part that contains the title, but I have to manually edit it since it contains "_" in place of spaces and some special characters are in HTML coding. Being able to select the title is a must-have feature. I'll track the phabricator task for updates.