@atlaskit/editor-core,
the ProseMirror-based editor behind Jira comments and Confluence pages, in its
comment appearance. It exposes the same #ak-editor-textarea
contenteditable and akEditor class a real Jira or Confluence page does, for
issue #10768.
🔙 Visit Advanced fields.
It gets its own page rather than a section on Advanced fields because the editor can't be loaded from a CDN and bundles to 5.5MB — an order of magnitude heavier than anything else there, on the page whose load time already broke the e2e suite once.
The preset omits tables, media, emoji, mentions and link cards, so pasting one of those drops it here but not in real Jira. Restoring them triples the bundle.