pre-order plugin

Dear all,

The pre-order plugin seems to cause a bit of corruption with the standard Product Bundle plugin. Is there any way to fix this?

Essentially if you look at this link:
http://kapasliving.com/v10/product/kapasluxe-xl-bath-towels/

When the pre-order plugin is activated, the original words “Add for [crossed out RM159] RM143.10” just reverts to Add for RM143.10 only.

Is there a way to fix it? I’ve set up a staging site for oyur convenience. In the staging site, the plugin is activated. You may deactivate it to see the issue.