[Support Challenge Bug] Intercept projectiles with the Grenade Intercept System

Sup dudes, I was also having trouble with this and also the other challenge where you have to heal teammates but neither would track at times. The only "solution" I found is when you get that first grenade interception or healing of a teammate and check to see that it did not count, I switch over to conquest or really any game mode and 9/10 it will begin tracking again. When it stops tracking in that game mode ill switch back over to rush or something to get it to start tracking again.