u/I-o-I-_-I-u-I

I live in Florida USA.
This plant has been living in my screened in balcony it’s whole life (2+ years)
I repotted one of my monsteras two weeks ago and just noticed this yellow spongey looking stuff growing under the soil. I’ve never had this happen before, could the bamboo skewer I put in for support be the culprit here? I’m going to let it grow and see what happens but I’m worried it might negatively affect my plant? Any insight is much appreciated! 🙏