Okay, so here's what I'm seeing. When you click on the main page, it's gone. But I always sort by Questions>Active and it shows up there. I'm on Chrome, for what it's worth.
Update: We've tested with this question (apologies to whoever that was), and it appears that 8 downvotes is the threshold for removing it from the main page, but not the "Active Questions" page. I have screenshots of the whole thing.
Main page Questions/Active Questions/Newest (This line of ss is from first question to disappear)