#! /usr/bin/env bash paradigm seemingly not supported by sandbox mode

[pointo1d]

As we all know, the portability paradigm in common use is to use a hashbang line similar to #! /usr/bin/env bash, but when testing in sandbox mode, I'm not able to run my tests; FWIW, I use sandbox mode to verify that pure bash scripts are exactly that i.e. aren't reliant on anything non-builtin (bizarrely and unexpectedly, sandbox mode requires mocks for non-builtin commands used in the spec files).

[pointo1d]

I notice this same topic (or something very similar) has already been reported & further discussed here.

It s/b noted that, altho' a she-bang line of #! /usr/bin/env bash is recognized by bash i.e. a space (' ') char after the bang, shellspec itself is seemingly sensitive to the space after the bang since #!/usr/bin/env bash seems to work just fine.