iOS: Inappbrowser sometimes does not open the page and event "falls through" to main webView

There is a simple app illustrating the issue: https://github.com/tomasfejfar/cordova-bug-01

There is a div with ontouch event that will open google.com in inappbrowser - there is a link inside - that will open seznam.cz

Steps to reproduce:

• play with it long enough clicking on the link and closing inappbrowser (appears irregularly)
• wild inappbrowser appears (EMPTY)
• seznam.cz is loaded in the main webview

My guess is that on some occasions the window.open() call fails somehow and the webview handles the tap event - opening the link.