It seems to be a different study (authors) with the same conclusion from a month ago: Why solid-state batteries keep short-circuiting (21 points, 2 comments) https://news.ycombinator.com/item?id=47558827

Original nature (closed): [Electrochemical corrosion accompanies dendrite growth in solid electrolytes](https://www.nature.com/articles/s41586-026-10279-z)

This nature (open): [Mechanically driven Li dendrite penetration in garnet solid electrolyte](https://www.nature.com/articles/s41586-026-10415-9)