When a title with boxed style (border arround title) is split (by doing normal ENTER (and not shift ENTER which work as expected)) the title being in inline-block for styling purpose, this give odd results (of several title boxes on the same line). With this commit style is changed so split title are on different lines. opw-2070611 closes #37084 Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>