Cascading select doesn't work in firefox and ie8

After upgrade jira to 4.2 version I found out problem on report configuration screen. I have report with 2 select boxes in cascade:

...
            <property>
                <key>projectid</key>
                <name>report.cs.project</name>
                <description>report.cs.project.description
                </description>
                <type>select</type>
                <values class="com.atlassian.jira.portal.ProjectValuesGenerator"/>
            </property>
            <property>
                <key>version</key>
                <name>report.cs.version</name>
                <description>report.cs.version.description
                </description>
                <type>cascadingselect</type>
                <cascade-from>projectid</cascade-from>
                <values class="sk.eea.jira.plugin.report.ProjectsVersionCascadingValuesGenerator"/>
            </property>
....

Firefox 3.6.11 problem: There is no options in Projects selectbox and there are all versions of all projects in Version selectbox as you can see in attachment.
IE8 problem: There is no visible Version selectbox and navigation (Next, Cancel) buttons on screen as you can see at attachment.
Opera 10.63 and IE7 has no problem - everything works as before upgrade to jira 4.2.

I have done some research and I found out, that javascript function dynamicSelect(id1, id2) from cascadingutil.js is called with wrong parameters for firefox.
Firefox alert: "id1: undefined_select id2: projectid_select"
IE8 aler: "id1: projectid_select id2: version_select"
Opera alert: "id1: projectid_select id2: version_select"

In my opinion there is wrong resolving of hidden parameters paramCascadeFrom and paramName from <fieldset> elements of generated HTML code (html as attachment) in firefox.