res.config.settings.x_fc_default_landing_action_id is related= to
res.company.x_fc_default_landing_action_id, which was widened from
ir.actions.act_window to ir.actions.actions in the Phase I post-deploy
fixes (so the picker accepts both window AND client actions). The
settings field's comodel was left at the old type and tripped on
opening Settings: 'Wrong value for ...: ir.actions.actions()' when
the related compute tried to write the client-action value into the
narrower settings field.
Module version: 19.0.21.1.2 -> 19.0.21.1.3
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>