Resync editors if content model changed (#13230)

src/Umbraco.Web.UI.Client/src/common/directives/components/content/edit.controller.js

@@ -232,6 +232,7 @@
 
                     appendRuntimeData();
                     init();
+                    startWatches($scope.content);
 
                     syncTreeNode($scope.content, $scope.content.path, true);
 
@@ -565,7 +566,6 @@
             $scope.page.loading = true;
 
             loadContent().then(function () {
-                startWatches($scope.content);
                 $scope.page.loading = false;
             });
         }

src/Umbraco.Web.UI.Client/src/common/directives/components/content/umbvariantcontenteditors.directive.js

@@ -64,6 +64,8 @@
                 setActiveVariant();
             } else if (changes.segment && !changes.segment.isFirstChange() && changes.segment.currentValue !== changes.segment.previousValue) {
                 setActiveVariant();
+            } else if (changes.content) {
+                setActiveVariant();
             }
         }