Trundle's E does not reduce Scuttlecrab's resistances when it is knock up
When Trundle uses his E under Scuttlecrab, Scuttlecrab is knocked up, but the resistances remain the same; they are not reduced to 10. It may be intentional, but I doubt it. There were a few knock-ups that had a similar bug, and they were fixed. Trundle's pillar must have gone unnoticed. This is not a bug that has come up recently; it has always been an issue.
Fix