I have enabled Production mode, and when I run setup:static-content:deploy, it creates two folders - en_AU and en_US.
In pub/static/frontend/mytheme/, en_US folder has all nessesary files generated, and en_AU folder has only one .js file generated.
When I refresh my front-end, I can see all files including css and js are loaded from en_AU folder, but since this folder is emtpy, so my front-end is not displaying correctly. Then I need to manually copy everything from en_US to en_AU to make front-end working.
Why does system creates two folders with one has all contents, and another empty, but front-end is reading from the empty folder.
How can I fixed this issue ?