Upgrade to SpacePen 3b85ccfb0ec43, which replace 'attach' events with 'afterAttach' hooks

src/app/cursor.coffee

@@ -17,9 +17,11 @@ class Cursor extends View
     @editor = editor
     @anchor = new Anchor(@editor, screenPosition)
     @selection = @editor.compositeSelection.addSelectionForCursor(this)
-    @one 'attach', =>
-      @updateAppearance()
-      @editor.syncCursorAnimations()
+
+  afterAttach: (onDom) ->
+    return unless onDom
+    @updateAppearance()
+    @editor.syncCursorAnimations()
 
   handleBufferChange: (e) ->
     @anchor.handleBufferChange(e)

src/app/editor.coffee

@@ -208,14 +208,15 @@ class Editor extends View
       else
         @gutter.addClass('drop-shadow')
 
-    @on 'attach', (e) =>
-      return if @attached
-      @attached = true
-      @calculateDimensions()
-      @hiddenInput.width(@charWidth)
-      @setMaxLineLength() if @softWrap
-      @focus() if @isFocused
-      @trigger 'editor-open', [this]
+
+  afterAttach: (onDom) ->
+    return if @attached or not onDom
+    @attached = true
+    @calculateDimensions()
+    @hiddenInput.width(@charWidth)
+    @setMaxLineLength() if @softWrap
+    @focus() if @isFocused
+    @trigger 'editor-open', [this]
 
   rootView: ->
     @parents('#root-view').view()

src/app/root-view.coffee

@@ -26,7 +26,6 @@ class RootView extends View
   initialize: ({ pathToOpen, projectPath, panesViewState }) ->
     @on 'toggle-file-finder', => @toggleFileFinder()
     @on 'show-console', => window.showConsole()
-    @one 'attach', => @focus()
     @on 'focus', (e) =>
       if @activeEditor()
         @activeEditor().focus()
@@ -50,6 +49,9 @@ class RootView extends View
 
     @deserializePanes(panesViewState) if panesViewState
 
+  afterAttach: (onDom) ->
+    @focus() if onDom
+
   serialize: ->
     projectPath: @project?.path
     panesViewState: @serializePanes()