diff --git a/plugins/git-release-manager/src/features/Features.test.tsx b/plugins/git-release-manager/src/features/Features.test.tsx
index cdef4f0d43..28bd9b6310 100644
--- a/plugins/git-release-manager/src/features/Features.test.tsx
+++ b/plugins/git-release-manager/src/features/Features.test.tsx
@@ -41,6 +41,10 @@ describe('Features', () => {
           createRc: { omit: true },
           promoteRc: { omit: true },
           patch: { omit: true },
+          custom: {
+            // shouldn't trigger "missing key" warning in console
+            factory: () => [<div>Custom 1</div>, <div>Custom 2</div>],
+          },
         }}
       />,
     );
diff --git a/plugins/git-release-manager/src/features/Features.tsx b/plugins/git-release-manager/src/features/Features.tsx
index b8386c41cc..0fa5ded36d 100644
--- a/plugins/git-release-manager/src/features/Features.tsx
+++ b/plugins/git-release-manager/src/features/Features.tsx
@@ -29,6 +29,7 @@ import { useProjectContext } from '../contexts/ProjectContext';
 import { useVersioningStrategyMatchesRepoTags } from '../hooks/useVersioningStrategyMatchesRepoTags';
 import { validateTagName } from '../helpers/tagParts/validateTagName';
 
+import { Box } from '@material-ui/core';
 import { ErrorBoundary, Progress } from '@backstage/core-components';
 import { useApi } from '@backstage/core-plugin-api';
 
@@ -89,6 +90,19 @@ export function Features({
     );
   }
 
+  let CustomFeatures =
+    features?.custom?.factory({
+      latestRelease: gitBatchInfo.value.latestRelease,
+      project,
+      releaseBranch: gitBatchInfo.value.releaseBranch,
+      repository: gitBatchInfo.value.repository,
+    }) ?? null;
+  if (Array.isArray(CustomFeatures)) {
+    CustomFeatures = CustomFeatures.map((CustomFeature, index) => (
+      <Box key={`grm--custom-feature--${index}`}>{CustomFeature}</Box>
+    ));
+  }
+
   return (
     <RefetchContext.Provider value={{ fetchGitBatchInfo }}>
       <ErrorBoundary>
@@ -143,13 +157,7 @@ export function Features({
           />
         )}
 
-        {features?.custom?.factory &&
-          features.custom.factory({
-            latestRelease: gitBatchInfo.value.latestRelease,
-            project,
-            releaseBranch: gitBatchInfo.value.releaseBranch,
-            repository: gitBatchInfo.value.repository,
-          })}
+        {CustomFeatures}
       </ErrorBoundary>
     </RefetchContext.Provider>
   );