Before this commit, it was possible to drag and drop a popup inside an oe_structure which was itself inside an other oe_structure (e.g. snippet parallax). It didn't make sense and moreover created bugs. After this commit, it is no longer possible to drag and drop the popup snippet or the newsletter popup snippet in a substructure. task-2491976 closes odoo/odoo#81669 X-original-commit: 49050c124795852ce7ad51b92958498972730dcf Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com> Co-authored-by: qsm-odoo <qsm@odoo.com>