No Chinese displayed even have the language set

Some days ago I could not see Chinese on busy.org but English only. I tried to switch language for several times but nothing helped.

The only Chinese I can find is at the Pending Payout.

I think there's some mistake on multi-language translation file, maybe wrong file merged to master branch.

Steps to reproduce

1. Login into Busy.org
2. Go to Settings
3. Select Simplified Chinese from Language (if it is Chinese now you may need to switch it), and click Save

Browser: Chrome 62 / Edge
OS: Window 10 64bit