Any widget using the jquery mobile lib (jquery.mobile-1.0b1.min.js) has problems when loaded in to the gallery view. The error console says...
SCRIPT16389: Unspecified error.
jquery.mobile-1.0b1.min.js, line 65 character 394
.. and nothing renders on screen. A browser refresh of that particular iframe seems to reload the widget okay. Additionally, when the widget is loaded into its own page (top level) this problem does not occur.
Applies to: Freeder, WARP and whitelist widgets and only applies to IE 9.