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
void BeforeUnloadFired(content::WebContents* tab,
                         bool proceed,
                         bool* proceed_to_fire_unload) override;
  void MoveContents(content::WebContents* source,
                    const gfx::Rect& pos) override;
  void CloseContents(content::WebContents* source) override;
  void ActivateContents(content::WebContents* contents) override;
  void UpdateTargetURL(content::WebContents* source, const GURL& url) override;
  bool IsPopupOrPanel(const content::WebContents* source) const override;
  void HandleKeyboardEvent(
      content::WebContents* source,
      const content::NativeWebKeyboardEvent& event) override;
  bool PreHandleKeyboardEvent(content::WebContents* source,
                              const content::NativeWebKeyboardEvent& event,
                              bool* is_keyboard_shortcut) override;
  void EnterFullscreenModeForTab(content::WebContents* source,
                                 const GURL& origin) override;
  void ExitFullscreenModeForTab(content::WebContents* source) override;
  void RendererUnresponsive(
      content::WebContents* source,
      const content::WebContentsUnresponsiveState& unresponsive_state) override;
  void RendererResponsive(content::WebContents* source) override;
  bool HandleContextMenu(const content::ContextMenuParams& params) override;
  bool OnGoToEntryOffset(int offset) override;
  void FindReply(content::WebContents* web_contents,
                 int request_id,
                 int number_of_matches,
                 const gfx::Rect& selection_rect,
                 int active_match_ordinal,
                 bool final_update) override;