We currently don't populate rev_content_* when saving if they are the default in order to save space, however this prevents changing of the default.
- Mentioned In
- T128466: Frontpage of wikidata wiki of the vagrant role wikidata shows error mssage
T105245: <flow-action-unsupported> on any action
T73163: Cannot edit old revisions if the content model of those revisions are different from the page's current revision
- Mentioned Here
- T105652: RfC: Content model storage