I wrote:
> So (a) it broke around 48 hours ago, which is already a useful
> bit of info, and (b) your animals seem far more susceptible than
> anyone else's. Why do you suppose that is?
Eyeballing the commit log for potential causes in that time frame,
I can't help noticing
2 days ago Andres Freund Move replication slot release to before_shmem_exit().
regards, tom lane