- `wcf\system\comment\manager\ICommentManager::canModerate()` ([WoltLab/WCF#5852](https://github.com/WoltLab/WCF/pull/5852/))
- `wcf\system\box\BoxHandler::createBoxCondition()` ([WoltLab/WCF#5906](https://github.com/WoltLab/WCF/pull/5906))
- `wcf\system\box\BoxHandler::addBoxToPageAssignments()` ([WoltLab/WCF#5906](https://github.com/WoltLab/WCF/pull/5906))
+- Non-standard methods of `wcf\data\comment\CommentAction` ([WoltLab/WCF#5944](https://github.com/WoltLab/WCF/pull/5944))
+- Non-standard methods of `wcf\data\comment\response\CommentResponseAction` ([WoltLab/WCF#5944](https://github.com/WoltLab/WCF/pull/5944))
### JavaScript
All PSR-14 events now use the new `event` namespace (located under `lib/event`). See the [PSR-14 event documentation](../../php/api/events.md) for details.
The changes are backwards compatible, the old namespaces can still be used.
+
+
+## Comment Backend
+
+The backend of the comment system has been revised and is now based on the new RPC controllers and commands.
+The previous backend (the methods of `CommentAction` and `CommentResponseAction`) remains for backward compatibility reasons, but has been deprecated.
+If you do not interact directly with the backend, no changes are usually required. [See](https://github.com/WoltLab/WCF/pull/5944) for more details.