User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-1967967-20200930115232

In the UCP:
 * Using "sic" code in the text adds linebreaks before and after it. Example - https://princeofpersia.fandom.com/wiki/Template:Sic
 * Using a "reflist" code with infobox, it always appears below the infobox, as if it was using the "clear" code. Example - https://princeofpersia.fandom.com/wiki/David_Boat

Edit: Also in the UCP. Comments can't be edited. When edit button is clicked it only shows blank section. What that means that the comment has to be rewritten, and you can't just fix one typo error.