Change Details

1. Edit a page that transcludes a template that provides a heading (e.g. https://www.mediawiki.org/w/index.php?title=Project:Sandbox&oldid=1886644&veaction=edit or <https://wikitech.wikimedia.org/w/index.php?title=static.wikipedia.org&oldid=46977&veaction=edit>) 2. Put cursor in the "Insert paragraph" placeholder above this transclusion. 3. Now Insert a template (e.g. template "Note" on mediawiki.org, or template "Doc-old" on wikitech) 4. Observe how the preview looks (no issues) 5. Save Actual result: Page renders as `Note:==Heading== Content here.` where the heading syntax is no longer parsed because it must be on a new line. This is due to the template not being considered to be on its own line when the DOM is serialised by Parsoid.