Grenade drops not updating after loadout switch
A fairly minor bug:
If you switch to a new specialisation when equipping a loadout via the UI in the inventory screen (rather than using the specialisation table in the White House/Haven), mobs and grenade boxes in the world will continue to drop your former specialisation's grenades, not your new one (e.g. switching from Technician to Survivalist will result in mobs still dropping EMP grenades, not incendiary grenades, but they will not be picked up as they don't match your current specialisation.)
Pretty easy to replicate: just make sure you have fewer than the maximum number of grenades, switch to a loadout with a different specialisation via the inventory screen, and loot a grenade box. Your grenade count won't increase, and the icon for the grenade will match your previous specialisation's type (as well as the concussion grenade dropped every time.) You still get your grenades refilled as normal at settlements and safehouses.
It can be resolved by logging out/back in, or just selecting a new specialisation at the table.
It appears that grenade loot tables just need to update when a player switches loadouts.