Hello, agents.

I have all craftable exotic weapons: Liberty, Nemesis and Chatterbox. All them are 490. And I have all upgradable recipes for them.
Today I've upgraded my craft station to 500 - and found out that upgradable recipes do not see weapons in my inventory - counter for each is red:
00/01 weapon_name 250+
So I am not able to upgrade any of them.

Is it some kind of new mechanic or just a bug?

Thank you.