I use BatchModifyPlugin r9409 and Trac 0.12.2.
The following patch removes the border around the collapsed fieldset of 'Batch Modify' and displays it like Trac's 'Filters' and 'Columns'.
Taken from Trac's report.css ('#query fieldset.collapsed').
--- ./0.12/trunk/batchmod/htdocs/css/batchmod.ori.css Mon Sep 13 16:02:40 2010
+++ ./0.12/trunk/batchmod/htdocs/css/batchmod.css Thu Feb 10 09:25:55 2011
@@ -11,6 +11,12 @@
padding: 0.1em 0.5em;
}
+#batchmod_form fieldset.collapsed {
+ border-width: 0;
+ margin-bottom: 0pt;
+ padding: 0pt .5em;
+}
+
#batchmod_form th {
text-align: right;
white-space: nowrap;