- Electron version: 1.2.2
- Operating system: Linux

This is a problem only in linux. It works in OSX.

``` javascript
win.hide()
win.capturePage(function(img){
 // never called
})
```

shell/browser/api/electron_api_web_contents.cc
content::WebContents* source,
    std::unique_ptr<content::WebContents> new_contents,
    const GURL& target_url,
    WindowOpenDisposition disposition,
    const gfx::Rect& initial_rect,
    bool user_gesture,
    bool* was_blocked) {
  auto* tracker = ChildWebContentsTracker::FromWebContents(new_contents.get());
  DCHECK(tracker);
  v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
  v8::Locker locker(isolate);
  v8::HandleScope handle_scope(isolate);
  auto api_ontents =
      CreateAndTake(isolate, std::move(new_contents), Type::kBrowserWindow);
  if (Emit("-add-new-contents", api_ontents, disposition, user_gesture,
           initial_rect.x(), initial_rect.y(), initial_rect.width(),
           initial_rect.height(), tracker->url, tracker->frame_name,
           tracker->referrer, tracker->raw_features, tracker->body)) {
    api_ontents->Destroy();
  }
}
content::WebConbContents::OpenURLFromTab(