Tia doesn't seem to be aware of it, but it is weird that no one from their group reacted to it so it might be it. I guess I was just overthinking it since Doben kinda looked concered rather than annoyed.
So what's up with the tendrils around Ed/Tia/Waffle during the stand off? Was someone planning to attack them? Doben even looked concerned when he noticed them... Was it Mimilu or a third party?