diff --git a/packages/core-compat-api/src/collectLegacyRoutes.test.tsx b/packages/core-compat-api/src/collectLegacyRoutes.test.tsx
index f8b40a561c..f3e2baee38 100644
--- a/packages/core-compat-api/src/collectLegacyRoutes.test.tsx
+++ b/packages/core-compat-api/src/collectLegacyRoutes.test.tsx
@@ -74,7 +74,7 @@ describe('collectLegacyRoutes', () => {
           },
           {
             id: 'api:plugin.scoringdata.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
@@ -90,7 +90,7 @@ describe('collectLegacyRoutes', () => {
           },
           {
             id: 'api:plugin.stackstorm.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
@@ -112,7 +112,7 @@ describe('collectLegacyRoutes', () => {
           },
           {
             id: 'api:plugin.puppetdb.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
@@ -211,7 +211,7 @@ describe('collectLegacyRoutes', () => {
           {
             id: 'api:plugin.catalog.service',
             attachTo: {
-              id: 'app',
+              id: 'root',
               input: 'apis',
             },
             defaultConfig: undefined,
@@ -220,7 +220,7 @@ describe('collectLegacyRoutes', () => {
           {
             id: 'api:catalog-react.starred-entities',
             attachTo: {
-              id: 'app',
+              id: 'root',
               input: 'apis',
             },
             defaultConfig: undefined,
@@ -229,7 +229,7 @@ describe('collectLegacyRoutes', () => {
           {
             id: 'api:plugin.catalog.entity-presentation',
             attachTo: {
-              id: 'app',
+              id: 'root',
               input: 'apis',
             },
             defaultConfig: undefined,
@@ -242,7 +242,7 @@ describe('collectLegacyRoutes', () => {
         extensions: [
           {
             id: 'api:plugin.scoringdata.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
diff --git a/packages/core-compat-api/src/convertLegacyApp.test.tsx b/packages/core-compat-api/src/convertLegacyApp.test.tsx
index ea84c06ba9..b76a6c2d71 100644
--- a/packages/core-compat-api/src/convertLegacyApp.test.tsx
+++ b/packages/core-compat-api/src/convertLegacyApp.test.tsx
@@ -66,7 +66,7 @@ describe('convertLegacyApp', () => {
           },
           {
             id: 'api:plugin.scoringdata.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
@@ -82,7 +82,7 @@ describe('convertLegacyApp', () => {
           },
           {
             id: 'api:plugin.stackstorm.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
@@ -104,7 +104,7 @@ describe('convertLegacyApp', () => {
           },
           {
             id: 'api:plugin.puppetdb.service',
-            attachTo: { id: 'app', input: 'apis' },
+            attachTo: { id: 'root', input: 'apis' },
             disabled: false,
           },
         ],
diff --git a/packages/frontend-app-api/src/wiring/createApp.test.tsx b/packages/frontend-app-api/src/wiring/createApp.test.tsx
index 6fc4720da2..e29a3afe94 100644
--- a/packages/frontend-app-api/src/wiring/createApp.test.tsx
+++ b/packages/frontend-app-api/src/wiring/createApp.test.tsx
@@ -255,28 +255,32 @@ describe('createApp', () => {
     const { tree } = appTreeApi!.getTree();
 
     expect(String(tree.root)).toMatchInlineSnapshot(`
-      "<app out=[core.reactElement]>
-        root [
-          <app/root out=[core.reactElement]>
-            children [
-              <app/layout out=[core.reactElement]>
-                content [
-                  <app/routes out=[core.reactElement]>
-                    routes [
-                      <page:my-plugin out=[core.routing.path, core.reactElement] />
+      "<root>
+        app [
+          <app out=[core.reactElement]>
+            root [
+              <app/root out=[core.reactElement]>
+                children [
+                  <app/layout out=[core.reactElement]>
+                    content [
+                      <app/routes out=[core.reactElement]>
+                        routes [
+                          <page:my-plugin out=[core.routing.path, core.reactElement] />
+                        ]
+                      </app/routes>
                     ]
-                  </app/routes>
+                    nav [
+                      <app/nav out=[core.reactElement] />
+                    ]
+                  </app/layout>
                 ]
-                nav [
-                  <app/nav out=[core.reactElement] />
+                elements [
+                  <app-root-element:app/oauth-request-dialog out=[core.reactElement] />
+                  <app-root-element:app/alert-display out=[core.reactElement] />
                 ]
-              </app/layout>
+              </app/root>
             ]
-            elements [
-              <app-root-element:app/oauth-request-dialog out=[core.reactElement] />
-              <app-root-element:app/alert-display out=[core.reactElement] />
-            ]
-          </app/root>
+          </app>
         ]
         apis [
           <api:app-theme out=[core.api.factory]>
@@ -315,7 +319,7 @@ describe('createApp', () => {
           <api:core.auth.vmware-cloud out=[core.api.factory] />
           <api:plugin.permission.api out=[core.api.factory] />
         ]
-      </app>"
+      </root>"
     `);
   });
 
diff --git a/packages/frontend-plugin-api/src/blueprints/ApiBlueprint.test.ts b/packages/frontend-plugin-api/src/blueprints/ApiBlueprint.test.ts
index c9dd7811b6..f937b556ed 100644
--- a/packages/frontend-plugin-api/src/blueprints/ApiBlueprint.test.ts
+++ b/packages/frontend-plugin-api/src/blueprints/ApiBlueprint.test.ts
@@ -38,7 +38,7 @@ describe('ApiBlueprint', () => {
       {
         "$$type": "@backstage/ExtensionDefinition",
         "attachTo": {
-          "id": "app",
+          "id": "root",
           "input": "apis",
         },
         "configSchema": undefined,
@@ -87,7 +87,7 @@ describe('ApiBlueprint', () => {
       {
         "$$type": "@backstage/ExtensionDefinition",
         "attachTo": {
-          "id": "app",
+          "id": "root",
           "input": "apis",
         },
         "configSchema": {