I've been trying hard to determine what triggers it. There's seemingly no rhyme or reason. This is an interesting theory, something the opposing team does is causing stacks. I'm lucky enough to usually have at least one clan member with me so we just call them as they drop, ignoring the prompt, but I've been paying attention to the timing out of curiosity. With randoms I'm not completely sure the false info changes what they are doing. Often they don't understand that mechanic either way