So, I'm not sure if you've run into something like this before, but for whatever reason, once I duplicate and join my stack of rocks, the UVs show up spaced out like I would expect, except the UV for the second rock from the top is completely invisible. At first I thought it was missing, but after some tinkering I learned it is in fact still there, it just doesn't show up (when selected or otherwise). Is there something I'm missing in UV settings that can help rectify this?