Bug with batches

[ollym]

We're trying to show a progress report but it's not working because of this error

[bensheldon]

@ollym thanks for reporting! That's strange because I would currently expect a job and head_execution to point to the same row in the database 🤔 Maybe if you're using preserve_job_records = false it's possible the record is deleted between the job being loaded and the association being loaded (even though they point to the same record in the database).

Hopefully that's the case, because I made #1022 which removes the 2nd query (assuming that a 2nd query is the cause of your problem) and is overall a cleaner implementation imo.