Again.. i looked (searched) before this posting which returned zero results. I can't believe there's not an answer here already - so I apologize if this is a repeat.
Occasionally I find something like a healing pod or spores, or even thorns, and am told that I can't pick it up. If I drop something else, I can pick up the new item.
However... I'm not encumbered. Carrying 81# / Encumbered at 100#
What's the deal?