Tiki banners do not allow SCRIPT elements (even with HTML purifier disabled)

• Error

I want to use Tiki's banner system to manage hosted ads (such as Google Ads).

I created a new Tiki banner: tiki-edit_banner.php

In the Select ONE method for the banner: field, I selected Use HTML and added the following script (from Google Ads):

<script type="text/javascript"><!--
google_ad_client = "ca-pub-3913918000422534";
/* Info Lettres 8 à 15 */
google_ad_slot = "8790064474";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

Upon saving, Tiki adds <X> to my code, breaking the SCRIPT elements:

<script type="text/javascript"><!--
google_ad_client = "ca-pub-3913918000422534";
/* Info Lettres 8 à 15 */
google_ad_slot = "8790064474";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

This happens even if I HTML Purifier disabled.

Tiki should allow full HTML (including SCRIPT elements) within the HTML box for Ads. I understand the security implication of allowing SCRIPT elements, but only users with permission to create ads can do this.

I tried creating a SHOW instance, but received the following error:
Tiki Installer missing third party software files

My workaround is to have Google Ads in a module and apply them to the pages by using the MODULE plugin. However, I can no longer:

• Track clicks (from within Tiki)
• Show/display the ad by time/date

This bug has been demonstrated on show2.tikiwiki.org

Please demonstrate your bug on show2.tikiwiki.org