We subtly changed the way of working for sortable and tree models. Your content may be affected only if the draft/published system is enabled for some of your models.
Up until now, when a model was using the draft/published system, the user was forced to republish the records after updating the record position or rearranging the tree.
As of today, the changes to records' position of a model sortable (i.e. its position in the list) or tree (i.e. its position in the tree) are immediately reflected on the GraphQL published endpoints: you don't need anymore to publish the record again.
This change only applies to models with draft/published system enabled.