That is super strange and I have never personally encountered this issue. I use Modular Avatar to add clothing instead of DressingTools. It may be worth trying Modular Avatar instead as it could be an issue with DressingTools.
I find that when physbones get messed up they tend to stay broken at least in the cases that it has happened to me. Someone may be able to give better advice in this situation, but my suggestion is to install Modular Avatar, drag in a new prefab for Selestia and make the changes you did on that again. I hope you find a solution ❤
