Invalid language on embedded controls iOS app for HTML5 and Cordoba iOS

Question

I created an Android / iOS app using HTML5 and Cordova 2.9.

I have a strange problem only for iOS: every time when my own control is displayed (for example, if the <input> tag is focused or <select> pressed), the action buttons are marked in German, despite the fact that the device’s language set to English.

For example, the label "Finish" becomes "Fertig".

I am using Xcode5 and targeting only for iOS7. Did I miss something?