`.modal.o_inactive_modal` (in modal.scss) had a z-index that was superior to that of a fullscreen editor. As a result we could end up with the editor being partially hidden by a modal. task-2741872 closes odoo/odoo#85315 X-original-commit: 6ef3c1cf59ac66f00462468079500c449f189fae Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>