APK file is larger than OBB file in Unity 2017

I just upgrade my android project to Unity 2017 and Build it with the split binary check but it results that APK file is larger than OBB file (APK is 118 MB, OBB is 55.8 MB). But in Unity 5.6.3 the size is (APK is 37.5 MB, OBB is 132.9 MB). I need to setup anything more?

@moondance02 This patch fixed the issue for me. Unity 2017.1.0p1