So, as of the April 3rd and last update. Halo 4 for me on MCC is really buggy. On Reclaimer, there is a the part where Lasky tells everyone to board the Mammoth and closes the doors to progress to the next area. However, the doors never closed for me and the overworld became cut off and broken. Eventually the Mammoth disappears and instant kills you, making all progress halted and a forced mission restart.
(This was prior to the April 3rd YapYap update)
As of today, Departure Chapter One of Spartan Ops did the same thing, except I tried to assassinate a General, glitched inside him and was insta-killed. After respawn, went back to his location and that whole section of the map was gone. I also got insta-killed entering that broken location.
Only Halo 4 is having this issue for me, and I’m wondering if anyone else is/ or having similar problems.