• Fixed a bug where asset, category, and entry sources defined by the EVENT_REGISTER_SOURCES event didn’t have any custom fields available to them, unless the EVENT_REGISTER_FIELD_LAYOUTS event was also used to define the available field layouts for the event-defined source. (#16256)
• Fixed a bug where Link fields were getting string types in CustomFieldBehavior rather than craft\fields\data\LinkData.
• Fixed a JavaScript error that could occur when creating new nested elements. (#16262)