Someone joining + leaving resets LFG
I don’t think it’s a bug, that’s just the way it is (or if it’s a bug it’s been like that for as long as I can remember lfg being around). You are correct though, I’ve run into plenty of trolls when throwing up a party over the years in that exact scenario, would be nice if they redid that. And if it happens enough, your suppressed even though your the one being trolled.