* Output of `node_modules/.bin/electron --version`: 3.0.9 (and up)
* Operating System (Platform and Version): Windows 10
* Output of `node_modules/.bin/electron --version` on last known working Electron version (if applicable): 2.0.x

**Expected Behavior**
Pressing `Ctrl + Shift + V` should result in one paste event only.

**Actual behavior**
Pressing `Ctrl + Shift + V` results in two paste events only.

**To Reproduce**
@brenca was nice enough to make a Fiddle (https://gist.github.com/brenca/e0ca153755979bed51a991e9d8c185bb). 

**Additional Notes**
A few notes that are interesting:
 * This bug is Windows-only.
 * Not registering a `paste` handler: No issue
 * Not calling `event.preventDefault()` or `event.returnValue = false`: No issue
 * Just clicking on a `MenuItem` that calls `webContents.pasteAndMatchStyle()`: No issue
 * Not registering a `MenuItem` with an accelerator: No issue
 * Chromium 66 does not have this issue


atom/browser/ui/atom_menu_model.h
public:
    virtual ~Observer() {}
    
    virtual void OnMenuWillShow() {}
    
    virtual void OnMenuWillClose() {}
  };
  explicit AtomMenuModel(Delegate* delegate);
  ~AtomMenuModel() override;
  void AddObserver(Observer* obs) { observers_.AddObserver(obs); }
  void RemoveObserver(Observer* obs) { observers_.RemoveObserver(obs); }
  void SetRole(int index, const base::string16& role);
  base::string16 GetRoleAt(int index);
  bool GetAcceleratorAtWithParams(int index,
                                  bool use_default_accelerator,
                                  ui::Accelerator* accelerator) const;
  
  void MenuWillClose() override;
  void MenuWillShow() override;
  using SimpleMenuModel::GetSubmenuModelAt;
  AtomMenuModel* GetSubmenuModelAt(int index);
 private:
  Delegate* delegate_;  
  std::map<int, base::string16> roles_;  
  base::ObserverList<Observer> observers_;
  DISALLOW_COPY_AND_ASSIGN(AtomMenuModel);
};
}  
#endif