diff --git a/src/libraries/System.CodeDom/tests/System/CodeDom/Compiler/CodeCompilerTests.cs b/src/libraries/System.CodeDom/tests/System/CodeDom/Compiler/CodeCompilerTests.cs
index 244931f1f5876b..7a53cd95b1d9eb 100644
--- a/src/libraries/System.CodeDom/tests/System/CodeDom/Compiler/CodeCompilerTests.cs
+++ b/src/libraries/System.CodeDom/tests/System/CodeDom/Compiler/CodeCompilerTests.cs
@@ -55,7 +55,6 @@ public void CompileAssemblyFromDom_NullOptions_ThrowsArgumentNullException()
 
         [Theory]
         [MemberData(nameof(CodeCompileUnit_TestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void FromDom_ValidCodeCompileUnit_ReturnsExpected(CodeCompileUnit compilationUnit)
         {
             var compiler = new StubCompiler();
@@ -67,7 +66,6 @@ public void FromDom_ValidCodeCompileUnit_ReturnsExpected(CodeCompileUnit compila
         [Theory]
         [MemberData(nameof(CodeCompileUnit_TestData))]
         [SkipOnTargetFramework(TargetFrameworkMonikers.NetFramework)]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void FromDom_ValidCodeCompileUnit_ThrowsPlatformNotSupportedException(CodeCompileUnit compilationUnit)
         {
             var compiler = new Compiler();
@@ -363,7 +361,6 @@ public void CompileAssemblyFromSource_NullOptions_ThrowsArgumentNullException()
         }
 
         [Theory]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         [MemberData(nameof(Source_TestData))]
         public void FromSource_ValidSource_ReturnsExpected(string source)
         {
@@ -374,7 +371,6 @@ public void FromSource_ValidSource_ReturnsExpected(string source)
         [Theory]
         [MemberData(nameof(Source_TestData))]
         [SkipOnTargetFramework(TargetFrameworkMonikers.NetFramework)]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void FromSource_ValidSource_ThrowsPlatformNotSupportedException(string source)
         {
             var compiler = new Compiler();
@@ -398,7 +394,6 @@ public static IEnumerable<object[]> Sources_TestData()
 
         [Theory]
         [MemberData(nameof(Sources_TestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void CompileAssemblyFromSourceBatch_ValidSources_ReturnsExpected(string[] sources)
         {
             ICodeCompiler compiler = new StubCompiler();
@@ -430,7 +425,6 @@ public void CompileAssemblyFromSourceBatch_NullSources_ThrowsArgumentNullExcepti
 
         [Theory]
         [MemberData(nameof(Sources_TestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void FromSourceBatch_ValidSources_ReturnsExpected(string[] sources)
         {
             var compiler = new StubCompiler();
@@ -440,7 +434,6 @@ public void FromSourceBatch_ValidSources_ReturnsExpected(string[] sources)
         [Theory]
         [MemberData(nameof(Sources_TestData))]
         [SkipOnTargetFramework(TargetFrameworkMonikers.NetFramework)]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void FromSourceBatch_ValidSources_ThrowsPlatformNotSupportedException(string[] sources)
         {
             var compiler = new Compiler();
@@ -466,7 +459,6 @@ public void FromSourceBatch_NullSources_ThrowsArgumentNullException()
         [InlineData("")]
         [InlineData("cmdArgs")]
         [SkipOnTargetFramework(TargetFrameworkMonikers.NetFramework, "Occasionally fails in .NET framework, probably caused from a very edge case bug in .NET Framework which we will not be fixing")]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void GetResponseFileCmdArgs_ValidCmdArgs_ReturnsExpected(string cmdArgs)
         {
             var compiler = new Compiler();
diff --git a/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/CtorsDelimiterTests.cs b/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/CtorsDelimiterTests.cs
index cb4059bc43e72c..352d0d1a6b29cb 100644
--- a/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/CtorsDelimiterTests.cs
+++ b/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/CtorsDelimiterTests.cs
@@ -114,7 +114,6 @@ public void TestConstructorWithFileName()
 
         [Theory]
         [MemberData(nameof(TestNames))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void TestConstructorWithFileNameAndName(string testName)
         {
             var target = new DelimitedListTraceListener(Path.GetTempFileName(), testName);
diff --git a/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/XmlWriterTraceListenerTests.cs b/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/XmlWriterTraceListenerTests.cs
index 46638320c0cdb0..20576cc9190b91 100644
--- a/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/XmlWriterTraceListenerTests.cs
+++ b/src/libraries/System.Diagnostics.TextWriterTraceListener/tests/XmlWriterTraceListenerTests.cs
@@ -44,7 +44,6 @@ public static IEnumerable<object[]> ConstructorsTestData()
 
         [Theory]
         [MemberData(nameof(ConstructorsTestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public void SingleArgumentConstructorTest(XmlWriterTraceListener listener, string expectedName)
         {
             Assert.Equal(expectedName, listener.Name);
diff --git a/src/libraries/System.Private.CoreLib/src/System/IO/Path.Unix.cs b/src/libraries/System.Private.CoreLib/src/System/IO/Path.Unix.cs
index c6b4d904e25865..e7b21263a8be1f 100644
--- a/src/libraries/System.Private.CoreLib/src/System/IO/Path.Unix.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/IO/Path.Unix.cs
@@ -103,7 +103,13 @@ public static unsafe string GetTempFileName()
             int tempPathByteCount = Encoding.UTF8.GetByteCount(tempPath);
             int totalByteCount = tempPathByteCount + fileTemplate.Length + 1;
 
+#if TARGET_BROWSER
+            // https://github.com/emscripten-core/emscripten/issues/18591
+            // The emscripten implementation of __randname uses pointer address as another entry into the randomness.
+            Span<byte> path = new byte[totalByteCount];
+#else
             Span<byte> path = totalByteCount <= 256 ? stackalloc byte[256].Slice(0, totalByteCount) : new byte[totalByteCount];
+#endif
             int pos = Encoding.UTF8.GetBytes(tempPath, path);
             fileTemplate.CopyTo(path.Slice(pos));
             path[^1] = 0;
diff --git a/src/libraries/System.ServiceModel.Syndication/tests/BasicScenarioTests.cs b/src/libraries/System.ServiceModel.Syndication/tests/BasicScenarioTests.cs
index e3df3f845677f0..f1269d75e0a2d5 100644
--- a/src/libraries/System.ServiceModel.Syndication/tests/BasicScenarioTests.cs
+++ b/src/libraries/System.ServiceModel.Syndication/tests/BasicScenarioTests.cs
@@ -44,7 +44,6 @@ public static void SyndicationFeed_CreateNewFeed()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/77526", TestPlatforms.Browser)]
         public static void SyndicationFeed_Load_Write_RSS_Feed()
         {
             string path = Path.GetTempFileName();
@@ -178,7 +177,6 @@ public static void SyndicationFeed_Load_Write_Atom_Feed_()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/73721", typeof(PlatformDetection), nameof(PlatformDetection.IsNodeJSOnWindows))]
         public static void SyndicationFeed_Write_RSS_Atom()
         {
             string RssPath = Path.GetTempFileName();