UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.110 Safari/537.36

Steps to reproduce the problem:
1. clone Mango from GitHub
2. install nwjs-v0.21.2-osx-x64
3. run "nwjs ." under Mango directory.

What is the expected behavior?

What went wrong?
[63951:775:0317/081813.447807:ERROR:child_thread_impl.cc(762)] Request for unknown Channel-associated interface: ui::mojom::GpuMain

Did this work before? N/A 

Chrome version: 57.0.2987.110  Channel: stable
OS Version: OS X 10.12.3
Flash Version: 

One author of NW.js project on GitHub say this is a Chromium issue, so i comment here.