Copy to iBook does not work if iBook is not already running

[gmalartre]

Expected results: Cordova Open should be able to open a PDF and within the PDF viewer when we click 'copy to iBook' it should launch iBook then copy the file.

Actual results: Cordova Open does allow this interaction but if iBook is not open/running prior to the 'copy in iBook' button being click, the copy does not occur.

Step to reproduce:
adapt this code snippet by changing var filePath:

                var sourceFilePath = cordova.file.applicationDirectory + "www" + filePath;
                cordova.plugins.disusered.open(
                        sourceFilePath,
                        function () {
                            console.log('file opened successfully');
                        },
                        function (e) {
                            alert('Error status: ' + e.status + ' - Error message: ' + e.message);
                        }
                );

make sure iBook is not running.

The bug occured for me on iOs 9.2.1 on an iPad mini.

Note that this bug also exist in cordova.plugins.fileOpener2.open.