Closed Issue: Exception probably from repl window [1123]

This happened when the .npm command was writing output to the window.

```
System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.VisualStudio.Editor.Implementation.IVsGlobalUndoCapableUndoManager'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{305E8709-55B7-4732-B872-1C073AB58047}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
at Microsoft.VisualStudio.Editor.Implementation.TextDocData.OnTextBufferChanged(Object sender, TextContentChangedEventArgs e)
at Microsoft.VisualStudio.Text.Utilities.GuardedOperations.RaiseEvent[TArgs](Object sender, EventHandler`1 eventHandlers, TArgs args)
```