When opening a dialog using mouse and closing it, form_dialog_discarded is triggered, which tries to set focus on form while lastActivatedFieldIndex is -1, as dialog is opened using mouse directly do not set focus back to form widget if lastActivatedFieldIndex is -1 task-2031706 closes odoo/odoo#34684 Signed-off-by: VincentSchippefilt <VincentSchippefilt@users.noreply.github.com>