Boosts in Grifball

Playing Grifball for the first time today i came across a very unfortunate glitch. In three consecutive games i applied EXP game boosts (one purple, one rare and one common) but gained no extra exp after the game. Is that just standard for Grifball because i just wasted a bunch of my boosts and as a casual Halo gamer it is quite frustrating.
After this i played a couple of Team Arena matches and the boosts were working fine in that gamemode, so this makes me think its an issue specific to the Grifball playlist.

I noticed the same thing when I played. Don’t use them in grifball.