nw.js 0.13.0-rc1 - Window.open(url, [options], [callback]) - window in callback undefined

System: Windows 8.1 x64 nw.js: 0.13.0-rc1 x64 sdk build

When calling Window.open(url, [options], [callback]), the window instance put into the callback is often undefined. Example:

var local = {};
local.gui = require('nw.gui');

local.gui.Window.open('https://www.github.com', {
                    position: 'center',
                    width: 1410,
                    height: 700,                 
                    show: true
                }, function (_window) {
                    if (_window) {
                        console.log('OK. new window instance is there');
                    } else {
                        console.log('ERROR. new window instance is NOT there!');                  
                        console.log(typeof _window)
                    }
   });

It happens very often that _window is “undefined” in the callback. The window seems to be created but not shown and the instance is not given into the callback function. This does not happen every time but very often.

[rogerwang]

This was fixed in 0.14.4

[AndryBray]

https://github.com/nwjs/nw.js/issues/4844#issuecomment-218990338