So when you're in lv3 deploy you get a headshield but when you reload and look at youreself the shield is gone. I don't know if reloading removes the headshield and leave you vulnerable to headshots or if it's still there and just doesnt show up in the animation. And this only happened once to me but I bought the lv2 passive and my grenade launcher rounds would split into 2 instead of 3. Reloading or switching weapons didn't help and the next match it was back to normal.
Passive 1: Non-splitting mortar rounds. Passive 2: Split mortar rounds (2 shells). Passive 3: Split mortar rounds (3 shells).
Ow the game says: Gunner (Passive) Level 2 - Adds split Mortar rounds Level 3 - Minigun replaced with dual minigun So I thought passive 3 didnt change anything about the mortar. My bad
The head shield missing is a visual issue, you still have protection. It's unlikely we'll fix this. The split mortars are working as intended as the other posters have commented.
When you reload as a gunner while deployed there is no visual clue for enemies that you are deployed. It's really not that big of a deal when you consider he can't move and the health bonus from deploy 3 is really not worth the cost.