Was Big Team Battle actually changed?

Why are Scorpions and Wraiths back to spawning with only a minute left in the game? Big Team Battle was so much better for one day. One day of Scorpions and Wraiths spawning earlier and actually making the game fun and now back to them spawning with a minute left.

343 can’t even fix that right. Everything seems to get worse as time goes on.

Out of 5 BTB games I played this evening, the first one had a Wraith finally spawn with one minute left. The other four games had zero Wraiths or Scorpions spawn in the entire game and one of them even went all the way through overtime.