In at least Windows and Ipad versions, the user preference for "Auto Order Triggers" setting does not work if the option is set to false for initial gameplay. Until the user goes into settings, and checks the setting on and then back off. Arena seems to default the setting value to True despite user settings.

Can play Simulacrum Synthesizer and Pinnacle Starcage to replicate. After casting starcage, despite my setting to False, it will auto-order the triggers. Once I go in and check then uncheck the setting the problem is fixed, until I reboot the game