Submit button disappears in Drupal Registration. Recaptcha Library HTML issue

Submit button disappears in Drupal Registration when CiviCRM is enabled. Problem is in the packages/recaptcha/recaptchalib.php file, Function recaptcha_get_html .

I think I've seen this bug in older versions, but I haven't verified this.

In the register form with CiviCRM installed, the Recaptchatlib.php is incorrect:
<code>
<noscript>
<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>';
</code>

Resulting in the following HTML:
<code>
<noscript>
<iframe src="https://api-secure.recaptcha.net/noscript?k=[...]" height="300" width="500" frameborder="0"></iframe><br/>
</code>

Probably should be something like:
<code>
<noscript>
<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
<input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
</noscript>';
</code>

I did update my CiviCRM recaptchalib.php and the problem goes away.