I managed to remove HUD when spectating by pressing H. I did this accidentally and did not notice it until I spawned. As it turns out, if you remove the HUD it will stay that way even when you spawn back in. I saw no HUD elements at all, not even ammo status check when pressing down R.
HUD disappeared
Happened to me too before, just go to settings ingame and turn HUD off/on again, then you'll get it back!
@KingFormaggino That simple, huh? I feel like a big dumb-dumb, but that's alright. Thanks for the help!
@Seebu you did well on reporting it, hopefully they fix the bug.. But at least you get a temporary fix there that worked for me, should it happen to you again bro!