I have a download link (40mb+ file) when clicked and confirm where to save file, make another click on same link and got crash. 

Tried to make sample of crash, and didn't yet face such behavior: on second click app didn't made something (not showed download dialog), but also not crashed. Will provide sample as soon as got reproducible one.

Debug:
<img width="1331" alt="screen shot 2017-02-16 at 1 24 09 pm" src="https://cloud.githubusercontent.com/assets/1834053/23017440/56041e32-f44b-11e6-8d5c-f1ff6ad671cd.png">

Report:
<img width="1398" alt="screen shot 2017-02-16 at 1 25 28 pm" src="https://cloud.githubusercontent.com/assets/1834053/23017568/db45549e-f44b-11e6-8f74-650b0f2cc756.png">

Any idea what can affect such problem? 

As I see from report last triggered method was webContents.loadURL, but didn't understand why it was called since I have webContetst.session event 'will-download' called, that had to be triggered after webContents.downloadURL, not loadURL.

atom/browser/api/atom_api_web_contents.h
public CommonWebContentsDelegate,
                    public content::WebContentsObserver {
 public:
  enum Type {
    BACKGROUND_PAGE,  
    BROWSER_WINDOW,  
    REMOTE,  
    WEB_VIEW,  
    OFF_SCREEN,  
  };
  
  using PrintToPDFCallback =
      base::Callback<void(v8::Local<v8::Value>, v8::Local<v8::Value>)>;
  
  static mate::Handle<WebContents> CreateFrom(
      v8::Isolate* isolate, content::WebContents* web_contents);
  static mate::Handle<WebContents> CreateFrom(
      v8::Isolate* isolate, content::WebContents* web_contents, Type type);
  
  static mate::Handle<WebContents> Create(
      v8::Isolate* isolate, const mate::Dictionary& options);
  static void BuildPrototype(v8::Isolate* isolate,
                             v8::Local<v8::FunctionTemplate> prototype);
  int64_t GetID() const;
  int GetProcessID() const;
  Type GetType() const;
  bool Equal(const WebContents* web_contents) const;
  void LoadURL(const GURL& url, const mate::Dictionary& options);
  void DownloadURL(const GURL& url);