While size changing focus (thaumcraft spell system) works fine, Size Stabilization effect doesn't work at all.
It gives stabilizaton effect (up to 5 seconds), but it does not affect actual size. It's probably due to effect durration (like drinking milk provide infinite duration).

Playing Enigmatica 2: Expert - Extended v1. 47.0

A bolt -> Size Stabilization (duration 5) foci applies the size stabilization effect with a potency of -1 (or at least Jade reports that the effect has a potency of -1), resulting in no actual size change.

Applying the size stabilization effect with the /effect command and providing a positive potency does cause the size stabilization effect to properly return entities to their original size.