"Not Proficient" bug

Somewhere in between leveling up from Level 1 and Level 2, my sniper’s entire loadout disappeared, and they were given an assault loadout (armor, weapon, etc.) and suddenly they were “Not Proficient” because they had an assault weapon.

I looked around to see where the sniper weapon and armor had disappeared to, but couldn’t find it. Had it been overwritten? Do I need to manufacture new armor and weapons?

And then once I had manufactured a new sniper weapon, the same bug happened with my Heavy (again, converted to a default assault loadout).

Is this a known bug, and when is it scheduled to be addressed?