diff --git a/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XslCompiledTransform.cs b/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XslCompiledTransform.cs
index 00511a00ec6f19..7f9707004c9bdf 100644
--- a/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XslCompiledTransform.cs
+++ b/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XslCompiledTransform.cs
@@ -600,6 +600,7 @@ public void XmlResolver3(object param, XslInputType xslInputType, ReaderType rea
         [InlineData(XslInputType.Navigator, ReaderType.XmlValidatingReader, OutputType.Writer, NavType.XPathDocument)]
         [InlineData(XslInputType.Navigator, ReaderType.XmlValidatingReader, OutputType.TextWriter, NavType.XPathDocument)]
         [Theory]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/124344", typeof(PlatformDetection), nameof(PlatformDetection.IsAppleMobile), nameof(PlatformDetection.IsCoreCLR))]
         public void XmlResolver7(XslInputType xslInputType, ReaderType readerType, OutputType outputType, NavType navType)
         {
             using (new AllowDefaultResolverContext())
@@ -2548,6 +2549,7 @@ public void XmlResolver3(object param, XslInputType xslInputType, ReaderType rea
         [InlineData(XslInputType.Navigator, ReaderType.XmlValidatingReader, OutputType.Writer, NavType.XPathDocument)]
         [InlineData(XslInputType.Navigator, ReaderType.XmlValidatingReader, OutputType.TextWriter, NavType.XPathDocument)]
         [Theory]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/124344", typeof(PlatformDetection), nameof(PlatformDetection.IsAppleMobile), nameof(PlatformDetection.IsCoreCLR))]
         public void XmlResolver5(XslInputType xslInputType, ReaderType readerType, OutputType outputType, NavType navType)
         {
             using (new AllowDefaultResolverContext())
diff --git a/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XsltApiV2.cs b/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XsltApiV2.cs
index a4cee46f961fe2..7dc7693a689ead 100644
--- a/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XsltApiV2.cs
+++ b/src/libraries/System.Private.Xml/tests/Xslt/XslCompiledTransformApi/XsltApiV2.cs
@@ -38,6 +38,7 @@ public enum NavType
     //
     ////////////////////////////////////////////////////////////////
     [ConditionalClass(typeof(PlatformDetection), nameof(PlatformDetection.IsReflectionEmitSupported))]
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/124344", typeof(PlatformDetection), nameof(PlatformDetection.IsAppleMobile), nameof(PlatformDetection.IsCoreCLR))]
     public class XsltApiTestCaseBase2
     {
         // Generic data for all derived test cases
diff --git a/src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs b/src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs
index ef58dd59207ced..c78e842212dbdb 100644
--- a/src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs
+++ b/src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs
@@ -4568,6 +4568,7 @@ public static void DCS_TypeWithPrimitiveKnownTypes()
     private static bool IsNotWindowsRandomOSR => !PlatformDetection.IsWindows || (Environment.GetEnvironmentVariable("DOTNET_JitRandomOnStackReplacement") == null);
 
     [SkipOnPlatform(TestPlatforms.Browser, "Causes a stack overflow")]
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/127463", typeof(PlatformDetection), nameof(PlatformDetection.IsAppleMobile), nameof(PlatformDetection.IsCoreCLR))]
     [ConditionalFact(typeof(DataContractSerializerTests), nameof(IsNotWindowsRandomOSR))]
     public static void DCS_DeeplyLinkedData()
     {
diff --git a/src/libraries/tests.proj b/src/libraries/tests.proj
index d6c4aed495b680..bed1eb545cbc6b 100644
--- a/src/libraries/tests.proj
+++ b/src/libraries/tests.proj
@@ -655,13 +655,8 @@
     <SmokeTestProject Include="$(RepoRoot)\src\tests\FunctionalTests\iOS\Simulator\CoreCLR\*.Test.csproj"/>
 
     <!-- https://github.com/dotnet/runtime/issues/124344 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Composition\tests\System.Composition.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Loader\tests\System.Runtime.Loader.Tests.csproj" />
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Diagnostics.StackTrace\tests\System.Diagnostics.StackTrace.Tests.csproj" />
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Private.Xml\tests\System.Private.Xml.Tests.csproj" />
-
-    <!-- https://github.com/dotnet/runtime/issues/124344 -->
-    <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Runtime.Serialization.Xml\tests\System.Runtime.Serialization.Xml.Tests.csproj" />
 
     <!-- Timeouts -->
     <ProjectExclusions Include="$(MSBuildThisFileDirectory)System.Collections.Concurrent\tests\System.Collections.Concurrent.Tests.csproj" />