Issue #2126761 by Tim Bozeman, SGhosh, Jalandhar: The body field summary textarea indicates it has a description with aria-describedby attribute, but the DOM id value points to a non-existent node.

Issue #1898416 by Cottser, joelpittet, drupalninja99, mikl, drupalmonkey, bradwade, pwieck, ezeedub, kerasai, disasm | c4rl: Filter.module - Convert theme_ functions to Twig.