S22 Ballistics bugs

Product: Apex Legends
Platform:PC
Please specify your platform model. PC
AMD or Nvidia Model Number GTX3060
Enter RAM memory size in GB 16
What is your gamertag/PSN ID/EA Account name? NEIL689696
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Are you using any software with an overlay? No
Which Legend were you playing (if applicable)? Ballistics
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. firing range
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. testing Ballistics third weapon and two P2020
Did your squad mates also experience the issue? No
How many matches had you played in a row before the issue occurred? 0
When did this happen? (dd.mm.yy hh:mm) 07.08.24.04.14
How often does the bug occur? Rarely (0% - 9%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? Ballistics take both P2020 and shotgun at the same time in his right hand.
What should be happening instead? Ballistics should take shotgun only. P2020 seems to be a bug.
Steps: How can we find the bug ourselves? I don't even know. I try to trigger the bug again but failed.

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First video clip is the bug I described and what really happened.

Second screenshot is server kick me out while I'm trying to find out how this bug triggered.

While I switch one weapon to first place and third rapid and fast, seems another bug happened and game crashed.

By the way please fix this web UX please. I can't even see my post failed in the first time.

As a software engineer I need to use F12 to see the error. I can't upload video to show the bug I find in the game.

Third screenshot is this web error. Though error message send form backend says I can upload a zip file, frontend block zip file.