Board Thread:Technical Updates/@comment-957747-20190401211148/@comment-31863794-20190401225659

Rappy 4187 wrote:
 * NEW FEATURE: We will start rolling out automatic draft saving in the classic editor for both source and visual modes (including when visual mode is disabled).
 * This tool autosaves your planned changes every few seconds, so if your browser crashes or you accidentally close the tab, reopening the editor will bring you back to the same place!
 * You will have the option to discard the draft, and drafts are automatically discarded when you save your changes.
 * Note: this only covers the main article editor - comment and thread editors are not supported at this time.

I've had the chance to test this feature out on a few wikis and it's really great and useful. Looking forward to its global release.