Defeating a nation supporting your subjects independence in a war should break the support

Currently playing as qing having taken EIC from Britain and now both Spain and GB are supporting their independence for +0.2 ticking loyalty making it very hard to make them loyal. I've beaten them both in multiple wars at this point but still the pact stays. It feels like this should be broken when I beat them in a war, or at least have enforced a humiliate goal on them.

What do you all think?