kbin.social links not working in old.lemmy.ca

I noticed that kbin.social communities i'm subscribed have broken links in old.lemmy.ca -- not sure if its a config issue or an mlmym issue, but figured i should tell someone

example:

!gaming@kbin.social link on old.lemmy.ca points to https://old.lemmy.ca/m/gaming@kbin.social , https://old.lemmy.ca/c/gaming@kbin.social works fine