I might be wrong about the possible correlation, but I recall reading something about a bug fix related to deleting an account when it had PMs recently.
Thanks for the suggestion Looked in to this now, it seems probably not related as a couple of users that didn’t have any messages listed under messages → Inbox/Send/Archive still got errors, as well as for a user that had a fair few messages.
Weird is that now it’s working sporadically some of the time, on some users. Prior to the update, it worked every time without issue.
Note: From the review queue, it seems that agree → delete spammer is working fine currently (deletes all posts and the user).
I’m not sure if one class of condition(s) fits all of the fail cases. Do they all (or many/most of them) have something in common? Pretty vague, but if I was trying to put my finger on a bug here, that’s the pattern I’d want to know.
Are the errors all the same or are there indicative differences to classify the failures?
Thanks @griffin From what I’m seeing so far, my guess would be that existing post count would be the key variable. Users with less than 10 posts seem to be handled fine, above that is when it starts behaving weirdly, seemingly more so as the post count is higher.