Here’s some pics of spots on one of mine. It’s a larger Latouria species, but they all do the same thing when they are unhappy about something (water, temps, air movement, ect..). The spots are like a canary in a coal mine, lol, and they pop up quick. This plant was one that I had moved indoors a few months ago, but it was still in my “outdoor” mix, and I wasn’t watering it frequently enough. Spots popped up, a few leaves dropped, and they stopped once I got it situated. The first two pics are a front and back. The last pic is of a leaf that will eventually drop but doesn’t concern me. It’s not spreading in the sense that it is affecting other leaves or the pseudobulb, it’s just dying back
Edit: please excuse the cat hair fuzz on some of the leaves. This is the one plant that my Darla likes to rub all over
