I have a cron job (doing an sync against an external system) running every 10th minute in a multisite-install. For 2 out of 3 sites it is working perfectly.
On the third site the scheduled job is disappearing without notice?
I've scheduled the cron with WP Crontrol so there is no of my code adding or removing my crons. It silently just dissappear from the list of jobs.
I was thinking it might be unregistered if the jobs throws a lot of errors but I cant find anything in the error logs except some minor hiccups when the external system fail to respond.
How can I even troubleshoot this?