Hi Fernando

Your image doesn't shows up, it' doesn't work yet to upload images to Odoo forum, but you could add as an external URL

For what you refers there are some options according for what you wanna fix. For example if what you see as a problem is that buttons shows in one line and statusbar states shows in another, that it's caused by the css:

.openerp .oe_form > :not(.oe_form_nosheet) header ul:not(.oe_tooltip_technical):not(.oe_dropdown_menu), .openerp .oe_form > .oe_form_nosheet header ul:not(.oe_tooltip_technical):not(.oe_dropdown_menu) {
    display: inline-block;
    float: right;
}

And could be solved by just adding: "float: right !important;" to that rules.

If what you want is that do not split the statusbar due to the number of states it may have, you could fold your states in a dropdown menu but for that you need to convert your states field to a many2one for use it with the widget statusbar. In the model of that many2one you need a boolean field indicating that the record goes to the dropdown menu or not. Take as example project.task with project.task.type models. In the project task form the stage_id field is defined like this:

<field name="stage_id" widget="statusbar" clickable="True" options="{'fold_field': 'fold'}"/>

 Hope this helps