Given this, I'm particularly sad that MDN uses self-closing tags in its beginner-facing documentation. Edit: Here is the result of that confusion in the wild. "It's consistent with JSX" JSX and HTML are different formats. They aren't consistent with each other. Pretending they're ...
Edge 17 (EdgeHTML) already had support when the test was written. It inherited that support when adopting Chromium in 2019. With Opera switching to Chromium in 2013, I would assume that it received patches from upstream Chromium (September 2018) when that bug was fixed. (It is not tested ...