VS 2017 exception cause by extension

[kaifeong]

I randomly encountered exception in CodeAnalysis based on ActivityLog.xml when I'm writing TypeScript (.ts) in Visual Studio 2017. Below are the details:

• Error:
  

• ActivityLog.xml

<record>1204</record>
<time>2017/08/22 03:12:21.770</time>
<type>Error</type>
<source>Editor or Editor Extension</source>
<description>System.InvalidOperationException: Master edit already in progress&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Implementation.BufferGroup.PerformMasterEdit(ITextBuffer buffer, ISubordinateTextEdit xedit, EditOptions options, Object editTag)&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Implementation.TextBuffer.BasicEdit.PerformApply()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Implementation.BaseBuffer.TextBufferEdit.Apply()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.BufferUndoManager.Implementation.TextBufferChangeUndoPrimitive.Undo()&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Shared.Utilities.HACK_TextUndoTransactionThatRollsBackProperly.Cancel()&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Shared.Utilities.CaretPreservingEditTransaction.Cancel()&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Shared.Utilities.CaretPreservingEditTransaction.Dispose()&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Formatting.FormatCommandHandler.TryFormat(ITextView textView, Document document, IEditorFormattingService formattingService, Char typedChar, Int32 position, Boolean formatOnReturn, CancellationToken cancellationToken)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Formatting.FormatCommandHandler.ExecuteReturnOrTypeCommand(CommandArgs args, Action nextHandler, CancellationToken cancellationToken)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Formatting.FormatCommandHandler.ExecuteCommand(TypeCharCommandArgs args, Action nextHandler)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Commands.CommandHandlerService.&lt;&gt;c__DisplayClass6_1`1.&lt;ExecuteHandlers&gt;b__1()&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.InlineRename.RenameCommandHandler.HandlePossibleTypingCommand(CommandArgs args, Action nextHandler, Action`1 actionIfInsideActiveSpan)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.InlineRename.RenameCommandHandler.ExecuteCommand(TypeCharCommandArgs args, Action nextHandler)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Commands.CommandHandlerService.&lt;&gt;c__DisplayClass6_1`1.&lt;ExecuteHandlers&gt;b__1()&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.SignatureHelp.Controller.Microsoft.CodeAnalysis.Editor.ICommandHandler&lt;Microsoft.CodeAnalysis.Editor.Commands.TypeCharCommandArgs&gt;.ExecuteCommand(TypeCharCommandArgs args, Action nextHandler)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.CommandHandlers.SignatureHelpCommandHandler.ExecuteCommandWorker[TCommandArgs](TCommandArgs args, Action nextHandler)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.CommandHandlers.SignatureHelpCommandHandler.Microsoft.CodeAnalysis.Editor.ICommandHandler&lt;Microsoft.CodeAnalysis.Editor.Commands.TypeCharCommandArgs&gt;.ExecuteCommand(TypeCharCommandArgs args, Action nextHandler)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Commands.CommandHandlerService.ExecuteHandlers[T](IList`1 commandHandlers, T args, Action lastHandler)&#x000D;&#x000A;   at Microsoft.CodeAnalysis.Editor.Implementation.Commands.CommandHandlerService.Microsoft.CodeAnalysis.Editor.ICommandHandlerService.Execute[T](IContentType contentType, T args, Action lastHandler)&#x000D;&#x000A;   at Microsoft.VisualStudio.LanguageServices.Implementation.AbstractOleCommandTarget.ExecuteTypeCharacter(IntPtr pvaIn, ITextBuffer subjectBuffer, IContentType contentType, Action executeNextCommandTarget)&#x000D;&#x000A;   at Microsoft.VisualStudio.LanguageServices.Implementation.AbstractOleCommandTarget.ExecuteVisualStudio2000(Guid&amp; pguidCmdGroup, UInt32 commandId, UInt32 executeInformation, IntPtr pvaIn, IntPtr pvaOut, ITextBuffer subjectBuffer, IContentType contentType)&#x000D;&#x000A;   at Microsoft.VisualStudio.LanguageServices.Implementation.AbstractOleCommandTarget.Exec(Guid&amp; pguidCmdGroup, UInt32 commandId, UInt32 executeInformation, IntPtr pvaIn, IntPtr pvaOut)&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid&amp; pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.Exec(Guid&amp; pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)&#x000D;&#x000A;   at (Object , Guid&amp; , UInt32 , UInt32 , IntPtr , IntPtr )&#x000D;&#x000A;   at A.c49885434a1d8c8f81133d020dd5f62bf.c0012a3cfd6f80130a0508007ae497b4b(Object , Guid&amp; , UInt32 , UInt32 , IntPtr , IntPtr )&#x000D;&#x000A;   at A.c57459831c517742d5e83156c08747c3a.ccb62ce45c5a7c7e3ebb8ed49638752a7.c2982fd93cf67b24551ab2e6b1cdff910(Guid&amp; , UInt32 , UInt32 , IntPtr , IntPtr )&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid&amp; pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.CommandChainNode.InnerExec(Guid&amp; pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.SimpleTextViewWindow.Exec(Guid&amp; pguidCmdGroup, UInt32 nCmdID, UInt32 nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.VsKeyboardFilter.SendCommand(Guid cmdGroup, UInt32 cmdID, Object inParam)&#x000D;&#x000A;   at Microsoft.VisualStudio.Editor.Implementation.VsKeyboardFilter.TextInput(TextCompositionEventArgs args)&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Editor.Implementation.KeyProcessorDispatcher.&lt;&gt;c.&lt;DispatchTextInputEvents&gt;b__6_0(KeyProcessor p, TextCompositionEventArgs args)&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Editor.Implementation.KeyProcessorDispatcher.&lt;&gt;c__DisplayClass10_1`1.&lt;Dispatch&gt;b__0()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)</description>