This has been a longstanding issue, but with the seasonal Artefact allowing great builds around Void Grenades, that Voidwalker can take full advantage of, I think it's time people were reminded of it. In short, Scatter Grenades often bounce off random surfaces when they're supposed to detonate upon impact. In some cases, they bounce straight up off the floor, land and just sit there, unexploded. The clip linked below contains spoilers for the opening encounter of Garden of Salvation and also shows one of the worst examples of this bug I've seen. https://account.xbox.com/en-gb/gameclip/f170bcd9-898f-4848-b8dc-28412df06381?gamertag=Ev1LDragonFly&scid=00000000-0000-0000-0000-000000000000&rtc=1