Thanks for the report.
Does this definitely affect all cron events, or only the WordPress core cron events?
Sorry for the confusion. I checked it again, and it only affects action_scheduler_run_queue [ “WP Cron” ].
I downgraded to version 1.18.0 from your GitHub, and now I can edit the cron job again.
Ah yes, in version 1.19 the edit button has been removed from the Action Scheduler event because it has such a short recurrence that editing it usually results in an error.
Do you have a need to edit this event?
I changed it from 60 seconds to 10 minutes because my server cron job is only running every 10 minutes by design of my hosting provider.
The “Edit” button for the Action Scheduler event has been reinstated in the latest version. Cheers!