When "--aug" is not "noaug", the "--mirror=1" will be invalid?

[chengkeng]

When I want to use "--augpipe=bgc", the "--Mirror" becomes a useless setting?

Please pay attention to the shadow of the helmet in the picture. Whether the character is facing left or right, the direction of all shadows is single. If the real mirror learning is used, both shadow directions should exist at the same time.

How can I use it at the same time?
Thank you!