Only turn right when dual wielding in H2A with KBM

Getting this bug in H2A where if you dual weild with KBM you can only turn right? Like, straight up Zoolander style, I am unable to look to the left whenever I dual wield. I’ve tried uninstalling mods, tried verifying game files, reinstalling. No dice. Thought it was because of mods at first but I just reinstalled it on both my drives.

Steps to reproduce:
-Launch any mission in Halo 2 Anniversary with easy anti-cheat either enabled or disabled
-dual wield any combination of weapons in either classic or anniversary graphics
-try to look around freely, but especially try to aim to the left

System specs:
OS: Windows 10 Home ver: 10.0.18363 Build 18363
GPU: RTX2070 Super
CPU: Intel Core i7 6700K @ 4Ghz
RAM: 36GB of DDR3 RAM
GeForce Game-Ready Driver ver: 446.14
Halo MCC PC on Steam up to date as of June 15’th 2020

Make sure and file a bug report about this on the Halo Support site: https://aka.ms/HaloSupport

Be sure to read over the known issues list first before reporting