Could this be a bug?
The question was migrated from SO - maybe that is relevant to the issue.
Seems perhaps that the dba.se data is cached/refreshed at a lower rate than we might expect (and whether that is different from other sites, I'm not sure).
For example, on my network profile, it says that I have 868 answers on dba.se, yet on my dba.se profile, it says I have 897. Based on my answer history, I probably had 868 about two months ago (but I didn't count all of my answers individually to see exactly when - it's also not clear if it should include deleted answers, as I definitely have at least one of those in the same time frame).