Thank you for your patience while we continue investigating this issue.
Based on feedback from our second-tier team, the current stack trace only captures what happens during shutdown, so it doesn’t show which cron job was running beforehand. To help identify that, they’ve suggested adding some temporary logging to trace cron activity.
Could you please try adding the following snippet to your site?
Still nothing so far.
Either the problem somehow is fixed, or it depends on the moon phase or something.
I also cannot keep the logging active indefinitely; it adds up to around 200 MB per day.
I propose we close this ticket for now. If the problem returns, I'll reactivate the logging, and we'll have some more info to go off of.