So if it’s working fine on other smart objects, just not this one… Then it’s not the node, because the node in a vacuum is going to be the same as the other nodes in a vacuum.
Maybe show the Hierarchy of one of the ones that is working fine vs this one that isn’t? Could be a hierarchy issue.
Also, try deleting the “Get Slot Transform” node and creating it again by pulling off of the Smart Object Subsystem node. Sometimes you can end up with a different node accidentally, depending on where you’re pulling it from.
Other than that, we’re just going to have to see a lot more code here for context reasons.