Player observed using shield cells and shooting at the same time

Product: Apex Legends
Platform:PC
Please specify your platform model. PC
AMD or Nvidia Model Number GTX 1050 Ti
Enter RAM memory size in GB 4 GB VRam
What is your gamertag/PSN ID/EA Account name? Lucifrmornignstr
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Which Legend were you playing (if applicable)?
Which Legends were your squad mates using (if applicable)?
Where did the issue occur? In a match
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. the riverbed by artilary near bunker
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. fighting two different squads
Did your squad mates also experience the issue? Yes
How many matches had you played in a row before the issue occurred? i played 3 matches before i ran into someone doing this
When did this happen? (dd.mm.yy hh:mm)
How often does the bug occur? Occasionally (10% - 49%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? Other players are able to heal while shooting at the same time making it multiple times harder to fight
What should be happening instead? not being able to shoot and recharge sheilds at the same time
Steps: How can we find the bug ourselves? there are just players running around with shield batteries with guns sticking out of them shooting players

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while playing i came across two different squads that were able to use shield batteries and healing items while shooting at the same time, making it much harder to fight them off.