Namespace, scope and lazy loading

How is the namespace reference supposed to behave when the namespace is used before being declared? (Using mixins and variables before declaring them is legal.)

It seems like if I use mixin from namespace before declaring it, the mixin uses the caller mixins and variables scope. E.g. this:

 #abc1 { #space1 > .test1(); }
 #space1 {
  .mixin1() { color: red; }
  .test1() { .mixin1(); }
  .mixin1() { margin: 2 2 2 2; }
 }
 .mixin1() { content: "conflict"; }

compiles into:

#abc1 {
  content: "conflict";
}

The mixin test1 does not see other mixins declared in the same namespace. Is it a bug or was not supposed to use it this way?

If I put the first reference #abc1 { #space1 > .test1(); } after the #space declaration, then the mixin test1 starts to compile correctly.

Reproduce the two namespace-order examples from the issue and compare how the namespace, mixin, and variable scopes resolve before and after declaration. Determine the intended behavior for forward namespace references, then verify that the reported example follows that behavior consistently.