Clicking on a tag in a tag cloud goes to the wrong URL.

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On my hosted site, I have a tag cloud displaying on the homepage:

This is set via /settings/FORUM_DATA_RULES/:

Clicking on a tag in the tag cloud takes me to e.g., http://expats.askbot.com/questions/?tags=singapore, but the list of questions that is displayed is not filtered at all. In fact, the presence of the tags parameter in the URL doesn't seem to have any effect upon the list of questions whatsoever.

If I change the display to a list instead of a cloud, clicking on a tag goes to the correct URL (e.g., http://expats.askbot.com/questions/scope:all/sort:activity-desc/tags:singapore/page:1/).

The same behavior occurs on the Tags page (http://expats.askbot.com/tags/). If the tags are displayed as a tag cloud, the URL for each link is incorrect, but the URL is correct when they are displayed as a list.