UPDATE Nikita responded and I did some tests with a friend. From what I was able to find, The Armor bug ONLY affects the breathing noise, and still protects as expected. I'll let anyone know if I find anything otherwise:
Video: https://youtu.be/DEGPGVQcfLU
ORIGINAL POST: PSA! Always take off and reequip armor when spawning into a raid, there's a bad armor bug!
Lately I've had every single raid I spawn into with a faceshield I don't hear breathing; meaning my armor is not protecting my head's hitbox. Streamers like Kotton, etc. are doing this.
If you feel you may have been unfairly or 1-shot through a Killa helmet with a TT or single chest shot through a fort and Tactic... It's because you probably had this glitch invalidating your gear.
can't confirm that this bug still exist. the idea that if you don't have breathing and that means that your helmet is not working was tested many times and did not confirmed. Anyway if you any additional info how to exactly replicate it - send bugreport and put a number of ticket here. It will be really helpful! Thanks!