u/Useful-Tumbleweed-22

So I was rereading era 2, and I was curious about how mists react to hermulergy. I remember reading a WOB about how mists don’t repel from hemulergy thanks to the combination that is Harmony. However, they’re repelled from Wax and Wayne in TLM, so now I’m confused. I’ve read all of Mistborn and Stormlight, including Secret History.