I have the same problem. I just found that the Google Maps Android SDK 2.0 marker information window is empty if the device language is set to Arabic, Hebrew, Persian or Urdu (i.e. Right to Left Language) and the transmitted string is in the same language. I checked this with Android Studio to make sure the string is in the correct language. The value of the line is correct when stopping at a breakpoint in AS, but not in the information window of the device (the window is empty). This may have something to do with my device that does not fully support these languages, or it may be a bug in the SDK (or both).
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