At https://www.mediawiki.org/wiki/Topic:V80l64inuhz2rhyt a user reports the ~~~~ wiki syntax not being expanded in the Two-Column-Edit-Conflict-Merge UI.
Note this is most probably not only about the ~~~~ syntax, but about all pre-save transforms.
Acceptance criteria:
- Pre-save transforms are applied in the UI after submitting an edit.
- In the final save, the syntax is expanded as well.