Annotations does not include request parameters in the rendering of the annotated HTML output

How to reproduce:

1. Create a test page with the following wiki content:

{{velocity}}
#if ($request.parameter)
  Parameter: $request.parameter
#else
  No parameter.
#end
{{/velocity}}

2. View it with annotations turned off. You will see "No parameter".
3. View again the page with annotations turned off, but this time add a the "parameter" to the request with whatever value. You will see "Parameter: <suppliedValue>".
4. Repeat step 3, but this time with annotations turned on. You will see "No parameter", even if you have provided the parameter to the request.

This is quite a big problem since it causes many applications to apparently not work.