why Shopify redirect users to APP URL without path/sub-directory?

[lilyyang721]

Hi,

I have a Shopify app with the URL like, https://mystore.abc.com/test, but Shopify always redirect users to 
https://mystore.abc.com/?shop=abc.myshopify.com&host=YWRtaW4uc2hvcGlmeS5j*****3JlZm9yZG9tYWlu

instead of 
https://mystore.abc.com/test/?shop=abc.myshopify.com&host=YWRtaW4uc2hvcGlmeS5j*****3JlZm9yZG9tYWlu

when installation.

And I think my app url fits the app url requirement when I try to distribute my app, but just wonder why

Shopify ignored the path/subdirectory in my app URL and how to fix it.

Thanks a lot.