Android does not allow resource strings/arrays/colors/ids/... have the same name. This fix will prevent duplicate names in the commonly used resource files (eg. strings.xml, colors.xml). Before the facebook change, we always copy the resource file to the build/android/res/ no matter if the file already exists in that folder, so if both the project and the module have a resource file with the same name (eg. strings.xml), the module resource will be copied first and then overridden by the project resource. I don't think we have a general rule on which wins. My fix will merge the resource files if they have the same name and remove the duplicate resource name which is copied first.