So I got the most recent patch and this is what happened,
My watcher character, every single fight, has a brand new weapon equipped (of equivalent quality). It's completely random--sometimes 2h, sometimes 1h, sometimes a ranged weapon. The character will use that weapon the entire fight, and as soon as the fight ends, my normal weapons return to the slot. These new weapons I get, are NOT weapons I own nor are they in my inventory.
Additionally, I can't change the weapons during combat at all. It's really bizarre.