GUI.TextField duplicates texts on android.

Hi, I have about four text fields in a scene. When you write in one and press tab or click another in the editor, it works fine. On low-end smartphones, it works fine. But on high-end smartphones, after typing in one text field and you touch another, it duplicates the text which was in the previous field into the current one, and if you touch another field it duplicates it again. I really don't understand why. Amazon has rejected my app for this reason. Please, any idea on what can be done ?