The random step function behaves a bit peculiarly, the first time the macro is used, it will pick the first line in the sequence always. Then the next and subsequent times, it will go on to choose a random line.

eg:

/y 1
/y 2
/y 3
/y 4

1 will always be first followed by random.

since I don't always want 1 first, I do this as a bit of a workaround:

/y
/y 1
/y 2
/y 3
/y 4

this does require me to click twice initially which is a bit annoying for my opie rings. Hope you have a look and it's an easy fix!

Random does as random does. While it behaves like that for you it behaves differently for me. In my case the first line generally is always the 4th. Random is a mathematical function that is implemented in WoW to follow some certain characteristics which as a developer I have no control over.