Broken Rank Advancement

Product: Battlefield V
Platform:Sony Playstation 4
Please specify your platform model. Sony PlayStation 4 Pro
Which part of the game is the issue happening in? Multiplayer
Which part of the mode? Conquest
Please select your region North America
On which server did this happen?
When did this happen? (dd.mm.yy hh:mm) 15.06.2019
Summarize your bug LVL 20 medic weapon wont unlock, game tells me "Available next round"
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? Unlock class level 20 weapon, quit before round ends or during post game summary
What happens when the bug occurs? Weapon locked
What should be happening instead? Weapon unlocked

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    I got that bug where the level 20 weapon wont unlock. In researching this bug, I found that leaving the round before it ends triggers this, however I quit during the post-game screen. I've played several matches and waited for the next round to see if it unlocks, but no luck. I'll include some screenshots showing this.

    Anyways, I read that contacting support can get this fixed. So I hope someone here can help, thanks!