For example, on ux.stackexchange.com the question is a link to the current page. (for SEO purpose I suppose).
But in order to select (and copy) a line of text, I usually triple click, which is not possible on links.
User Experience Stack Exchange is a question and answer site for user experience researchers and experts. It only takes a minute to sign up.
Sign up to join this communityI wouldn't say it's bad practice to make a title a link, though it all depends on your use case.
For example, the title of YouTube videos aren't links.
For me personally, I drag to select or if on mobile, long press and select "copy link text".