I glued in the vanity backsplash, and I used a tad too much glue so it doesn't sit tight against the wall. Furthermore the wall is not straight and even when I lined it up before gluing, there was a gap in places.
I would estimate the gap size at 1/8" max.
It's not the biggest deal, but it's annoying, and as you can see, a tiny bit of drywall fell into it (indicating that it may collect junk in the future). How would you recommend dealing with this? I could use a tiny bead of silicone caulk, but I'm not sure how that'll look, and undoing that will be annoying.