I opened a question (bug report) earlier this day about LQ Posts bug (getting same posts multiple times), but I've deleted it, beacause I realized that those posts can be very similar, not the same.
Later, I saw other posts to appear twice, but I don't have any proof of that.
Maybe I'm not the only who noticed this, because I reached 2000 rep today, there are other people who reviews posts for a longer time than me.
Here's another bug: I noticed 3 times that my reviewed-posts count is getting lower and lower. I have screenshot evidences here: