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:

[email protected] link on old.lemmy.ca points to https://old.lemmy.ca/m/[email protected] , https://old.lemmy.ca/c/[email protected] works fine