For example, I have a custom tag "read_more", and I want to add an attribute to it like: "more_node" and then set a "link" type in ezoe to browse a needed node for this attribute, then I get empty browse window.

extension/ezoe/design/standard/templates/ezoe/customattributes/link.tpl

line 182:

lid : function( id )
{
    var arr = id.split('_');
    return arr[0] + '_' + arr[1];
}

The problem is that this function separates a tag name and an attribute by underscore. In this case it won't work in the proper way.