diff --git a/src/JsonRpc/InputHandler.cs b/src/JsonRpc/InputHandler.cs
index aa1b2c577..80142f5e8 100644
--- a/src/JsonRpc/InputHandler.cs
+++ b/src/JsonRpc/InputHandler.cs
@@ -562,8 +562,6 @@ private SchedulerDelegate RouteNotification(IRequestDescriptor<IHandlerDescripto
             (contentModifiedToken, scheduler) =>
                 // ITS A RACE!
                 Observable.Amb(
-                    contentModifiedToken
-                       .Do(_ => { _logger.LogTrace("Notification was abandoned due to content be modified"); }),
                     Observable.Timer(_requestTimeout, scheduler)
                               .Select(z => Unit.Default)
                               .Do(
diff --git a/src/Protocol/Document/IDocumentFormattingHandler.cs b/src/Protocol/Document/IDocumentFormattingHandler.cs
index 318d8f0dc..0ede1c86a 100644
--- a/src/Protocol/Document/IDocumentFormattingHandler.cs
+++ b/src/Protocol/Document/IDocumentFormattingHandler.cs
@@ -8,7 +8,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Document
 {
-    [Serial]
+    [Parallel]
     [Method(TextDocumentNames.DocumentFormatting, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(ITextDocumentLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Document/IDocumentOnTypeFormattingHandler.cs b/src/Protocol/Document/IDocumentOnTypeFormattingHandler.cs
index 60a4ba206..bad6ddf1f 100644
--- a/src/Protocol/Document/IDocumentOnTypeFormattingHandler.cs
+++ b/src/Protocol/Document/IDocumentOnTypeFormattingHandler.cs
@@ -8,7 +8,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Document
 {
-    [Serial]
+    [Parallel]
     [Method(TextDocumentNames.OnTypeFormatting, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(ITextDocumentLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Document/IDocumentRangeFormattingHandler.cs b/src/Protocol/Document/IDocumentRangeFormattingHandler.cs
index a8c4ff379..933474187 100644
--- a/src/Protocol/Document/IDocumentRangeFormattingHandler.cs
+++ b/src/Protocol/Document/IDocumentRangeFormattingHandler.cs
@@ -8,7 +8,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Document
 {
-    [Serial]
+    [Parallel]
     [Method(TextDocumentNames.RangeFormatting, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(ITextDocumentLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Document/IPrepareRenameHandler.cs b/src/Protocol/Document/IPrepareRenameHandler.cs
index 4214c1b82..2382eacfc 100644
--- a/src/Protocol/Document/IPrepareRenameHandler.cs
+++ b/src/Protocol/Document/IPrepareRenameHandler.cs
@@ -8,7 +8,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Document
 {
-    [Serial]
+    [Parallel]
     [Method(TextDocumentNames.PrepareRename, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(ITextDocumentLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Document/IRenameHandler.cs b/src/Protocol/Document/IRenameHandler.cs
index a2ba6bbff..b86e017c1 100644
--- a/src/Protocol/Document/IRenameHandler.cs
+++ b/src/Protocol/Document/IRenameHandler.cs
@@ -8,7 +8,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Document
 {
-    [Serial]
+    [Parallel]
     [Method(TextDocumentNames.Rename, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(ITextDocumentLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Document/IWillSaveWaitUntilTextDocumentHandler.cs b/src/Protocol/Document/IWillSaveWaitUntilTextDocumentHandler.cs
index e90f934f8..8046410a6 100644
--- a/src/Protocol/Document/IWillSaveWaitUntilTextDocumentHandler.cs
+++ b/src/Protocol/Document/IWillSaveWaitUntilTextDocumentHandler.cs
@@ -8,7 +8,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Document
 {
-    [Serial]
+    [Parallel]
     [Method(TextDocumentNames.WillSaveWaitUntil, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(ITextDocumentLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Models/WorkspaceFolder.cs b/src/Protocol/Models/WorkspaceFolder.cs
index f9770bc7a..fb400e06a 100644
--- a/src/Protocol/Models/WorkspaceFolder.cs
+++ b/src/Protocol/Models/WorkspaceFolder.cs
@@ -20,14 +20,14 @@ public bool Equals(WorkspaceFolder other)
         {
             if (ReferenceEquals(null, other)) return false;
             if (ReferenceEquals(this, other)) return true;
-            return Uri.Equals(other.Uri) && Name == other.Name;
+            return Equals(Uri, other.Uri) && Name == other.Name;
         }
 
         public override bool Equals(object obj)
         {
             if (ReferenceEquals(null, obj)) return false;
             if (ReferenceEquals(this, obj)) return true;
-            if (obj.GetType() != GetType()) return false;
+            if (obj.GetType() != this.GetType()) return false;
             return Equals((WorkspaceFolder) obj);
         }
 
@@ -35,7 +35,7 @@ public override int GetHashCode()
         {
             unchecked
             {
-                return ( Uri.GetHashCode() * 397 ) ^ Name.GetHashCode();
+                return ( ( Uri != null ? Uri.GetHashCode() : 0 ) * 397 ) ^ ( Name != null ? Name.GetHashCode() : 0 );
             }
         }
 
diff --git a/src/Protocol/Window/IShowMessageRequestHandler.cs b/src/Protocol/Window/IShowMessageRequestHandler.cs
index 07f311e53..f001e38fa 100644
--- a/src/Protocol/Window/IShowMessageRequestHandler.cs
+++ b/src/Protocol/Window/IShowMessageRequestHandler.cs
@@ -7,7 +7,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Window
 {
-    [Serial]
+    [Parallel]
     [Method(WindowNames.ShowMessageRequest, Direction.ServerToClient)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(IWindowLanguageServer), typeof(ILanguageServer))]
diff --git a/src/Protocol/Workspace/IDidChangeConfigurationHandler.cs b/src/Protocol/Workspace/IDidChangeConfigurationHandler.cs
index 966fad989..ed4604ecc 100644
--- a/src/Protocol/Workspace/IDidChangeConfigurationHandler.cs
+++ b/src/Protocol/Workspace/IDidChangeConfigurationHandler.cs
@@ -9,7 +9,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Workspace
 {
-    [Serial]
+    [Parallel]
     [Method(WorkspaceNames.DidChangeConfiguration, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(IWorkspaceLanguageClient), typeof(ILanguageClient))]
diff --git a/src/Protocol/Workspace/IDidChangeWatchedFilesHandler.cs b/src/Protocol/Workspace/IDidChangeWatchedFilesHandler.cs
index a5b520eca..40852a4a4 100644
--- a/src/Protocol/Workspace/IDidChangeWatchedFilesHandler.cs
+++ b/src/Protocol/Workspace/IDidChangeWatchedFilesHandler.cs
@@ -9,7 +9,7 @@
 
 namespace OmniSharp.Extensions.LanguageServer.Protocol.Workspace
 {
-    [Serial]
+    [Parallel]
     [Method(WorkspaceNames.DidChangeWatchedFiles, Direction.ClientToServer)]
     [GenerateHandlerMethods]
     [GenerateRequestMethods(typeof(IWorkspaceLanguageClient), typeof(ILanguageClient))]
diff --git a/test/Lsp.Tests/RequestProcessIdentifierTests.cs b/test/Lsp.Tests/RequestProcessIdentifierTests.cs
index 638ed98f5..1f4d21e8d 100644
--- a/test/Lsp.Tests/RequestProcessIdentifierTests.cs
+++ b/test/Lsp.Tests/RequestProcessIdentifierTests.cs
@@ -46,6 +46,12 @@ public void ShouldIdentifyAs_Default()
         [InlineData(typeof(IHoverHandler))]
         [InlineData(typeof(IReferencesHandler))]
         [InlineData(typeof(ISignatureHelpHandler))]
+        [InlineData(typeof(IDocumentFormattingHandler))]
+        [InlineData(typeof(IDocumentOnTypeFormattingHandler))]
+        [InlineData(typeof(IDocumentRangeFormattingHandler))]
+        [InlineData(typeof(IWillSaveWaitUntilTextDocumentHandler))]
+        [InlineData(typeof(IDidChangeConfigurationHandler))]
+        [InlineData(typeof(IDidChangeWatchedFilesHandler))]
         public void ShouldIdentifyAs_Parallel(Type type)
         {
             var identifier = new RequestProcessIdentifier();
@@ -61,16 +67,10 @@ public void ShouldIdentifyAs_Parallel(Type type)
         [InlineData(typeof(IDidChangeTextDocumentHandler))]
         [InlineData(typeof(IDidOpenTextDocumentHandler))]
         [InlineData(typeof(IDidSaveTextDocumentHandler))]
-        [InlineData(typeof(IDocumentFormattingHandler))]
-        [InlineData(typeof(IDocumentOnTypeFormattingHandler))]
-        [InlineData(typeof(IDocumentRangeFormattingHandler))]
-        [InlineData(typeof(IWillSaveWaitUntilTextDocumentHandler))]
         [InlineData(typeof(IExitHandler))]
         [InlineData(typeof(IShutdownHandler))]
         [InlineData(typeof(ILanguageProtocolInitializeHandler))]
         [InlineData(typeof(ILanguageProtocolInitializedHandler))]
-        [InlineData(typeof(IDidChangeConfigurationHandler))]
-        [InlineData(typeof(IDidChangeWatchedFilesHandler))]
         [InlineData(typeof(IExecuteCommandHandler))]
         public void ShouldIdentifyAs_Serial(Type type)
         {