Strange error in development mode in 2.3.2 when streaming data

I've recently upgraded to 2.3.2 from 2.2.2. We used to have code in our controller that streamed data back to the browser in chunks, and that no longer works in 2.3.2. It seems to be messing up the dependency-loading mechanism. Here's a simplified version of the code:

# visitor.rb class Visitor < ActiveRecord::Base   has_many :events end

# event.rb class Event < ActiveRecord::Base   belongs_to :visitor end

# Now the interesting part...

class MyController < ActionController::Base

  def index      render :status => 200, :layout => false,                  :text => { |response, output| output.write }   end

The error we get is:

A copy of Admin::VisitorEventsController has been removed from the module tree but is still active!

This only happens if we try to reference an ActiveRecord model within the proc. We can't move our code out of the proc, because the whole idea is that we'll be streaming data that's being dynamically generated inside the proc.

Anybody else seen this?

Thanks Jeff