FileFinder removes itself when item is selected.

src/atom/file-finder.coffee

@@ -35,6 +35,7 @@ class FileFinder extends Template
     select: ->
       filePath = @findSelectedLi().text()
       @selected(filePath) if filePath and @selected
+      @remove()
 
     moveUp: ->
       @findSelectedLi()

src/atom/root-view.coffee

@@ -38,7 +38,7 @@ class RootView extends Template
     toggleFileFinder: ->
       return unless @project
 
-      if @fileFinder
+      if @fileFinder and @fileFinder.parent()[0]
         @fileFinder.remove()
         @fileFinder = null
       else