__traits(getMember) works only the second time

[andre via Digitalmars-d-learn]

Hi,

by executing the example source code,
following output is returned:
Reference: Child
false
true

At first "childStr" is not found, then it is found?
Is this a bug?

Kind regards
André

-----------------

module app;

import test;

class Child : Parent
{
  mixin ComponentTemplate;
  @property string childStr(){return "";}
}

void main()
{
  auto child = new Child();
  child.getParameters();
}

-----------------

module test;

template Params(this MyType)
{
  string[] Params()
  {
    pragma(msg, "Reference: " ~ MyType.stringof);
    pragma(msg, is(typeof(__traits(getMember, MyType, 
"childStr"))));
    pragma(msg, is(typeof(__traits(getMember, MyType, 
"childStr"))));
    return [];
  }
}

mixin template ComponentTemplate()
{
  private enum parameters = Params!(typeof(this));
        
  string[] getParameters()
  {
    return parameters;
  }
}

class Parent
{
  @property string parentStr(){return "";}
}