Because Portfolio Layout is working with full layout (100%) and you could not see sidebar-1 and sidebar-2 positions but you can customize it with my solution below
+ Create templates/ja_nuevo/css/custom.css file and add new this rule
.layout-ja_nuevoportfolio.com_content.view-category .t3-sidebar, .page-porfolio.com_content.view-category .t3-sidebar {
display: block;
}
.layout-ja_nuevoportfolio.com_content.view-category .t3-content, .page-porfolio.com_content.view-category .t3-content {
width: 50%;
}
.layout-ja_nuevoportfolio.com_content.view-category .t3-content, .page-porfolio.com_content.view-category .t3-content {
width: 50%;
}