"Two heads are better than none" Achievement broke

The achievement
“Two heads are better than none”
has stopped unlocking for me and others since the March 19th update. 343 can we get a fix on this please?

https://www.halowaypoint.com/en-us/forums/38bd6e2ebbb14e5b9b359bb029588800/topics/two-heads-are-better-than-none-not-unlocking/5a749dbd-649e-495a-9656-1531231927ca/posts

It results broken for many of us and we can just try to hope 343 sees this topic.