diff --git a/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js b/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js
index 101fb3aeb614..de2ba74c1016 100644
--- a/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js
+++ b/testing/web-platform/tests/encoding/streams/decode-bad-chunks.any.js
@@ -23,26 +23,6 @@ const badChunks = [
     name: 'array',
     value: [65]
   },
-  {
-    name: 'detached ArrayBufferView',
-    value: (() => {
-      const u8 = new Uint8Array([65]);
-      const ab = u8.buffer;
-      const mc = new MessageChannel();
-      mc.port1.postMessage(ab, [ab]);
-      return u8;
-    })()
-  },
-  {
-    name: 'detached ArrayBuffer',
-    value: (() => {
-      const u8 = new Uint8Array([65]);
-      const ab = u8.buffer;
-      const mc = new MessageChannel();
-      mc.port1.postMessage(ab, [ab]);
-      return ab;
-    })()
-  },
   {
     name: 'SharedArrayBuffer',
     // Use a getter to postpone construction so that all tests don't fail where
diff --git a/testing/web-platform/tests/encoding/streams/decode-utf8.any.js b/testing/web-platform/tests/encoding/streams/decode-utf8.any.js
index 34fa764bf0a6..266899c6c965 100644
--- a/testing/web-platform/tests/encoding/streams/decode-utf8.any.js
+++ b/testing/web-platform/tests/encoding/streams/decode-utf8.any.js
@@ -39,3 +39,23 @@ promise_test(async () => {
   assert_array_equals(array, [expectedOutputString],
                       'the output should be in one chunk');
 }, 'a trailing empty chunk should be ignored');
+
+promise_test(async () => {
+  const buffer = new ArrayBuffer(3);
+  const view = new Uint8Array(buffer, 1, 1);
+  view[0] = 65;
+  new MessageChannel().port1.postMessage(buffer, [buffer]);
+  const input = readableStreamFromArray([view]);
+  const output = input.pipeThrough(new TextDecoderStream());
+  const array = await readableStreamToArray(output);
+  assert_array_equals(array, [], 'no chunks should be output');
+}, 'decoding a transferred Uint8Array chunk should give no output');
+
+promise_test(async () => {
+  const buffer = new ArrayBuffer(1);
+  new MessageChannel().port1.postMessage(buffer, [buffer]);
+  const input = readableStreamFromArray([buffer]);
+  const output = input.pipeThrough(new TextDecoderStream());
+  const array = await readableStreamToArray(output);
+  assert_array_equals(array, [], 'no chunks should be output');
+}, 'decoding a transferred ArrayBuffer chunk should give no output');