See images below, the lower of my 2 rings is +2 Voltaic. These are the only 2 items i have with any Voltaic resists on, and the amount left changes depends on which order i remove them in. It seems to only remove the previous items Voltaic resists? If i remove any other item with or without resists everything updates to what it should be. Any other resist item i have access to behaves as you'd expect and updates immediately. If i save the game and load it in the resists update until i re-equip the items. Save available if needed. Edit: i forgot to also mention that you'll see that the Voltaic +damage persists also, as does the Aetheral resist. Edit 2: If i replace the amulet with another another the resists update as you'd expect. Before Amulet Removed After Amulet Removed Amulet then Ring Removed Ring Then Amulet Removed Maybe related to the issue reported here: http://community.gaslampgames.com/threads/resist-bug-after-loading-a-save.1883/ No mods are installed, and i am using DoD+the expansion(Steam offer over Christmas).
Known, it's a problem with jewelry in general but it goes away when you equip something else. That said, it's on the todo.