Jira 8 aui dialog not showed in top layer

[Flavio Beck]

Hi there,

After to upgrade to JIRA 8, a dialog is not being showed on top layer anymore.

I have a workflow transition screen, and JIRA 7 had a dialog showed over this screen. Now (jira 8) this dialog is under the transition screen (if I cancel the transition screen, So I can see the dialog that was hidden bihind).

This dialog is configured in a Behaviour (ScriptRunner) as below:

"function _apitAjaxGet2(check,optB,firstopening){ " + "\n" +
" var dialog = new AJS.Dialog({width: 500, height: 500,id: 'cf-dialog', closeOnOutsideClick: false}); " + "\n" +
" AJS."+"\$"+".ajax({" + "\n" +

" dialog.addHeader('Select issues to create a link with release issue'); dialog.addPanel('Panel 1', \"<p>\"+fieldsOutPut2+\"</p>\", 'panel-body');" + "\n" +
" dialog.addButton('Next', function (dialog) {_dialogCloseBtn2(optB);dialog.remove();});" + "\n" +
" dialog.gotoPage(0); dialog.gotoPanel(0); dialog.show(); " + "\n" +
" fieldsOutPut2 = ''; " + "\n" +

The dialog is working fine (I guess I do not need to change to dialog2).

Is there some parameter to set the dialog layer ?