Damage, Oxyloss and welding glass overlays are not applied properly.

Description of issue

When you receive a lot of brute damage, a red overlay forms around your screen. Similarly, receiving too much oxygen damage causes your screen to become blacker, and putting on a welding helmet significantly obscures your vision.

Those are all what I am calling 'overlays'. They are not being applied at all in game. The oxygen damage overlay does not work, nor does the red, brute damage overlay. And putting on a welding helmet does not change your vision.

All of those overlays are available at 'icons/mob/screen_full.dmi'

Difference between expected and actual behavior

Overlays should be properly applied when the conditions are met.

Steps to reproduce

Deal yourself a lot of oxygen or brute damage, or wear a welding helmet.
There will be no distortions on your screen view.

Specific information for locating

icons/mob/screen_full.dmi (Where the overlays are stored)
code_onclick\hud\fullscreen.dm (Where some of the overlay code is stored.)
code\modules\mob\living\carbon\human\life.dm - Line 671 (One of the mentions of the fire and brute damage overlay.)

Length of time in which bug has been known to occur

Since an unrelated test in a private server today, 10-30-2021.

Client version, Server revision & Game ID

Client Version: 513
Server Revision: 4a399c669ace3313da76725e724cd818650e8865 - Ahoy,-CMO.-I've-overdosed-on-fentanyl-and-now-I'm-going-to-die - 2021-10-30
Game ID: ceL-cyt8
Current map: ISEO Endeavour

AND

Client Version: 513
Server Revision: 69abc8611e64fccfb6da52435d92181b0be77f58 - ion - 2021-10-30
Game ID: ceL-c8zB
Current map: Tradeship Ocelot Alpha

Issue bingo

• Issue could be reproduced at least once
• Issue could be reproduced by different players
• Issue could be reproduced in multiple rounds
• Issue happened in a recent (less than 7 days ago) round
• Couldn't find an existing issue about this

Start by reading code/_onclick/hud/fullscreen.dm and the referenced section around line 671 of code/modules/mob/living/carbon/human/life.dm, then inspect icons/mob/screen_full.dmi. Reproduce the brute-damage, oxygen-damage, and welding-helmet cases and trace why their overlays are not applied. Done means each overlay appears when its stated condition is met.