User join date is showing unknown!

[junior pumice]

I'm quite curious how the join date of a user can show unknown?
#585199867782103060 message
Msg id: 1060248899073343538

[misty violet]

Hey, this is a bit of a complex answer so I will try to make it brief

Basically in a recent update I have made it so that instead of our bots automatically fetching member info for every server they’re in when they start up, that information is now fetched on-demand if a command needs that info. This has unfortunately taken a toll on the events such as join and leave tracking as the bot may not have the full info of the member that left, meaning some data such as join date and roles aren’t available. The best way to make sure the member data has been fetched is to run a command that requires “chunking” periodically such as userinfo, avatar, guildinfo, time, or any command under the moderation module. I apologise that the info shown in leave logging can be subpar but it was unfortunately a necessary tradeoff to prevent our server from constantly overloading which had been happening for quite some time (history can be seen in #status)