Back in October, dezso asked this question which is flagged as bug fixed. However, I'm still seeing the issue that a user's first post is not showing up in the first post review list. Here is an example:
According to my research, trygvis did review it: https://dba.stackexchange.com/review/first-posts/5569 and about 90 minutes before you asked this, give or take.
Additionally, let me show you how I got there :D