Heavy Class isn't getting ANY XP only in Supremacy on Scarif

Product: Star Wars Battlefront II
Platform:PC
What is your issue related to? General
Summarize your bug The Heavy Class, when played in Supremacy on Scarif only, doesn't get any XP from performing actions that grant XP. Score and Battlepoints are gained normally, but XP isn't. All other classes are unaffected, and the Heavy Class is unaffected by this on other maps as well.
What is your gamertag/PSN ID/EA Account name? RogueZeroRendar
How often does the bug occur? Every time (100%)
Can you tell us the date (MM/DD/YYYY) that you saw the bug?
What time did you see the bug? (HH:MM AM/PM)
In what game mode did the bug occur? Capital Supremacy
What is your time zone?
Steps: How can we find the bug ourselves? Get into a Supremacy match in the Age of Rebellion, play in the Scarif map, grab yourself the Heavy Trooper Class, and start performing actions that grant XP (shooting enemies, capturing command posts, dying to enemy heroes, literally anything that grants XP/Score/BPs).
What happens when the bug occurs? You'll see your score increasing, your battlepoints increasing, but your XP will remain the same. All of these values are tied, so when one increases the rest should increase. But only the Heavy, only in Supremacy mode, only on Scarif map isn't gaining the XP.
What do you expect to see? A fix
Please select your region Africa, Asia, Australia, Europe, North America, South America
AMD or Nvidia Model Number

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That explanation is pretty straightforward. No footage is required, just follow the steps and it'll be very clear this issue is taking place. If I stumble upon footage of this I'll bring it here.

It seems this glitch started after the last Triple XP event, on the 29th of July 2020, as in this footage from the 26th you can see the Heavy was gaining XP as normal:

A quick way to verify the XP gain is checking the white bar beneath the Health Bar. That's the XP bar. If you do small skips in the video you can see that bar increasing, which means the heavy is getting XP (while the player is still with the heavy though, as he changes classes later in the video). If you play nowadays though, you can get how many points you want with the Heavy class, that bar won't move an inch.