When you get a socket world transform it has its parent object scale, so when you make it relative to the object it scales incorrectly (doubles up the scale), when you are passing out the transform set the scale to 1. I may be switching over to that node passing out the relative space transform instead soon though, depends on how that would effect users as generally just passing out world transform of things is easier.
Edit That is assuming that you are overriding that function, if you aren’t then it should be working correctly.