So I've got a few items that give bonuses to stats and skills, most importantly the Ring of Influences, and I just noticed that when I go to the character screen, it doesn't show the bonuses. My Charisma is still 13, despite the +3 the ring gives me. Is this normal, or should they be displayed?
You are correct; they should. I just tested this with an old build, and when I took off the ring, my BE and CH both dropped by 3, as they were supposed to.
If the ring isn't adding a bonus (and your CH stat isn't turning green to indicate it) then I have to admit that I don't know what's going on. It could be a glitch, or a cursed item you're unaware of, or something else. When you take the ring off, do your CH and BE drop by 3 each?