1 files changed, 25 insertions, 0 deletions
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Serialization/ContinuationTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Serialization/ContinuationTests.cs
index 8496254aaed..b08e8b758e9 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Serialization/ContinuationTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.Tests/Serialization/ContinuationTests.cs
@@ -233,6 +233,31 @@ namespace System.Text.Json.Serialization.Tests
             Assert.Equal(expectedFailure.Column, ex.BytePositionInLine);
         }
 
+        [Fact]
+        public static async Task BomHandlingRegressionTest()
+        {
+            byte[] utf8Bom = Encoding.UTF8.GetPreamble();
+            byte[] json = """{ "Value" :                    "Hello" }"""u8.ToArray();
+
+            using var stream = new MemoryStream();
+            stream.Write(utf8Bom, 0, utf8Bom.Length);
+            stream.Write(json, 0, json.Length);
+            stream.Position = 0;
+
+            var options = new JsonSerializerOptions
+            {
+                DefaultBufferSize = 32
+            };
+
+            Test result = await JsonSerializer.DeserializeAsync<Test>(stream, options);
+            Assert.Equal("Hello", result.Value);
+        }
+
+        private class Test
+        {
+            public string Value { get; set; }
+        }
+
         private class Chunk : ReadOnlySequenceSegment<byte>
         {
             public Chunk(string json, int firstSegmentLength)