Use of the return: keyword in a function specification is not correctly implemented

[Oldes]

Having a function defined like:

fun: function [
    value [any-type!] "Some value"
    return: [block!]  "Some result"
][
    probe value
    return []
    ;; code bellow should be ignored!
    'ignore
]

Then code:

fun 23
;23
;== ignore ;<-- should be []

Also there is missing the return description text in the function's help:

USAGE:
     FUN value

DESCRIPTION:
     FUN is a function! value.

ARGUMENTS:
     value         [any-type!] Some value.

RETURNS:
     [block!]