OK - so it will be included in next release.

For quick fix:
1. Open file clientscript/vbet/vbet.script.js
2. Find:
Code:
var $edit_button = $("<span id='editCache_frame_button' style='position:absolute;'><div class='vbet_editCache_frame_button'>"+$('#vbet_edit').attr('title')+"</div></span>");
var new_top = offset.top+10;
var new_left = offset.left+25;
			
$('body').append($edit_button);
$edit_button.offset({ top: new_top, left: new_left});
3. Replace by:
Code:
var new_top = offset.top+10;
var new_left = offset.left+25;
var $edit_button = $("<span id='editCache_frame_button' style='position:absolute;z-index:1000;top: "+new_top+"px; left: "+new_left+"px;'><div class='vbet_editCache_frame_button'>"+$('#vbet_edit').attr('title')+"</div></span>");
			
$('body').append($edit_button);