Subscriptions module stops Send module from sending e-mails

I believe that the problem is occurring because the Subscriptions module is injecting a form anywhere node content appears (even if no content types are enabled for subscription!)

The Send module has a screen where the user can enter the recipient, subject, and body of the e-mail. These screens have URLs like "send/send/80". The screen renders the content of the node that the user is trying to send. When Send renders this content, Subscriptions injects a form into the content like this:

<form action="/drupal-5.6/?q=send/send/80"  accept-charset="UTF-8" method="post" id="subscriptions-ui-node-form">
<div><input type="hidden" name="form_token" id="edit-subscriptions-ui-node-form-form-token" value="43b3fec7bef2d53d333206d1e8704189"  />
<input type="hidden" name="form_id" id="edit-subscriptions-ui-node-form" value="subscriptions_ui_node_form"  />
</div></form>

However, the entire page is already wrapped in a form, because this content is being rendered inside the form used by the Send module. The result is two Drupal forms nested inside each other. Then, when I hit the Submit button on the Send form (outer form), the proper callback is not being invoked. It seems probable that Drupal is confused by the nested forms.

Ultimately, the problem is that I don't want the "Subscriptions" controls to appear when content is not being rendered in the usual way (by visiting the /node/ URL). It's likely that this problem is affecting many modules other than the Send module. I suggest a whitelist or blacklist of URLs where the Subscriptions tool should or shouldn't appear.

This seems to fix the problem. Will the change go in the next version?