Loadouts not saving
I set my loadouts in the main menu, and when i launch a game, they've all reverted and i have to change them all back to my custom loadout while in game. Super annoying. There was one time I couldn't...
Ideas
I noticed this as well. It seems that all of the preset attachments for the blueprint guns in particular aren't saving. I was having the same exact issue with the "Shrouded" blueprint as well as the "Mimic" blueprint. Separately I couldn't switch attachments in game on some other guns just as you mentioned. As soon as I selected a new attachment it immediately switched back to the previous attachment. This has happened to me numerous times on various non blueprint (stock) guns, so I think it's unrelated to the blueprint loadouts not saving. It seems to be two similar but separate bugs.