I had to create a login in this Forum just to join this thread. Seriously, this has to be considered a bug rather than a "feature". I'm very sure that thousands of apps use pre-filled t mailto urls using line breaks. If you're going to change all the standards on how you'll accept url linking from now on, at least take your time to document it or offer a workaround for developers that depend on it, now we're all with our hands tied scraping hopelessly at this thread for workarounds.