And then I found there was a new released 3.1, so I uninstall it and reinstall version 3.1, on another of my site as well. Now what drove me crazy is although the two sites are using the same configuration(To make things easy for debug, I didn't adjust it), the other one is totally fine, see here: http://www.siloamrm.org/index.php/categ ... ory/1-test, while this one still remains messed up.
Thus a question is raised, is this iframe popup box inherit some CSS style from the parent page so that the two sites' behaviors are different even though the setting is quite the same? And if yes, how shall I fix it?

