It looks like someone made an effort to hide the class weapons until you “discover” the class by suppressing them when “Show All” is chosen. But they forgot not to hide weapons you already have. I was very confused for a while today…
tldr: Choosing “show all” will hide class weapons you own.
Glad it’s not just me.
I was going a bit insane trying to find that Dragonator 2000 I unlocked.
Also, typing search terms won’t show up any of these class weapons either.