Last Login Bug

I have noticed this for quite some time. If a player’s account is old and they haven’t logged in for quite some time, when you look them up, it says their last login time and date is the time and date they joined ROBLOX.

Example: miked logged in last in 2011 if I can remember correctly and he has lifetime OBC which was not available in 2006.

Pretty sure this is due to a roll back because of a hacker. If I remember correctly.