diff --git a/plugin/builtin/patchtransformer/PatchTransformer_test.go b/plugin/builtin/patchtransformer/PatchTransformer_test.go
index eb287a991..ac1bbb750 100644
--- a/plugin/builtin/patchtransformer/PatchTransformer_test.go
+++ b/plugin/builtin/patchtransformer/PatchTransformer_test.go
@@ -636,3 +636,66 @@ spec:
         path: /canada
 `)
 }
+
+// test for https://github.com/kubernetes-sigs/kustomize/issues/2767
+// currently documents broken state.  resulting ports: should have both
+// take-over-the-world and disappearing-act on 8080
+func TestPatchTransformerSimilarArrays(t *testing.T) {
+	th := kusttest_test.MakeEnhancedHarness(t).
+		PrepBuiltin("PatchTransformer")
+	defer th.Reset()
+
+	th.RunTransformerAndCheckResult(`
+apiVersion: builtin
+kind: PatchTransformer
+metadata:
+  name: test-transformer
+patch: |-
+  apiVersion: apps/v1
+  kind: Deployment
+  metadata:
+    name: test-transformer
+    labels:
+      test-transformer: did-my-job
+target:
+  kind: Deployment
+  name: test-deployment
+`, `apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - image: test-image
+        name: test-deployment
+        ports:
+        - containerPort: 8080
+          name: take-over-the-world
+          protocol: TCP
+        - containerPort: 8080
+          name: disappearing-act
+          protocol: TCP
+`, `
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    test-transformer: did-my-job
+  name: test-deployment
+spec:
+  template:
+    spec:
+      containers:
+      - image: test-image
+        name: test-deployment
+        ports:
+        - containerPort: 8080
+          name: take-over-the-world
+          protocol: TCP
+        - containerPort: 8080
+          name: take-over-the-world
+          protocol: TCP
+`)
+}