The Irish gadget does not destroy projectiles from the Apache heli from Russia

Do we know which projectiles it isn't stopping? The Russian attack heli can equip a 30mm autocannon, which is handled the same as any other autocannon and is not blocked by any APS, that is intentional.  I cannot say I've noticed if the rockets are properly blocked by APS though, it is possible that the 127mm anti-vehicle rockets are now too fast for the shootdown sentinel to block, jet LGMs are the same way.