diff --git a/src/libraries/System.Runtime/tests/System.Threading.Tasks.Tests/System.Runtime.CompilerServices/AsyncProfilerTests.cs b/src/libraries/System.Runtime/tests/System.Threading.Tasks.Tests/System.Runtime.CompilerServices/AsyncProfilerTests.cs
index 2917970417434e..f568579d8782f2 100644
--- a/src/libraries/System.Runtime/tests/System.Threading.Tasks.Tests/System.Runtime.CompilerServices/AsyncProfilerTests.cs
+++ b/src/libraries/System.Runtime/tests/System.Threading.Tasks.Tests/System.Runtime.CompilerServices/AsyncProfilerTests.cs
@@ -32,6 +32,7 @@ public enum AsyncEventID : byte
         AsyncProfilerSyncClock = 14,
     }
 
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/127951", TestPlatforms.Android | TestPlatforms.iOS | TestPlatforms.tvOS | TestPlatforms.MacCatalyst)]
     public class AsyncProfilerTests
     {
         // The test scenarios drive async work via Task.Run(...).GetAwaiter().GetResult() (see