Neo keiki leaf browning, roots are a little dry

[alecStewart1]

Hey gang,

So I inspected my Nishidemiyako last night and I noticed a few things that made me raise an eyebrow.

As you'll see in the pictures, the little keiki has a leaf that turned brown. Not sure why, as I haven't watered the plants in a minute since it's getting colder.

The other pictures you can see the roots look kind of dried out. Yes, they're brown but they aren't mushy like it's rot, and, again I haven't water it in quite some time as I've been told to keep it's medium dry during the cooler seasons.

The plants stay in the cabinet under light where the T5 lights are roughly 2 - 2 1/2 feet away from the plant, and day time humidity is around 80% RH. The moss doesn't ever feel like it's gotten wet under this humidity whenever I've checked it once I get home from work. At night I take it out of the cabinet as I turn up the humidity to 95% for some of the Nepenthes I have, and it would definitely get wet and cold if I left it in the cabinet overnight.

Should I go ahead and water just a smidge, do any special treatment, or is everything looking normal?