SHA256/512 Availability

OK, this is weird. My Bangle 2 has my app loaded via the App Loader. If I connect the IDE to the Bangle and run "authentiwatch.app.js" from the device storage, then the SHA256/512 functions are missing:

c=require("crypto")
={
  SHA1: function (b) { ... }
 }
>c.SHA512
=undefined
>c.SHA1
=function (b) { ... }

However, if I click the "Send to Espruino" with RAM selected, the SHA256/512 functions suddenly exist!

c=require("crypto")
=function () { [native code] }
>c.SHA512
=function () { [native code] }
>c.SHA1
=function () { [native code] }