Mentioned here #59 (comment)

Today I installed zh_CN Simplified Chinese for system:

However, I still can't reproduce this:

chcp:

20936	x-cp20936	Simplified Chinese (GB2312); Chinese Simplified (GB2312-80)
50227	x-cp50227	ISO 2022 Simplified Chinese; Chinese Simplified (ISO 2022)

I don't have initial zh_CN .iso so it really hard to debug this while I can't see problem.

Cc: @Genteure