Odd behaviour: Blocking a domain also makes a thread disappear. Can't seem to find a common link,

As some of you may know, szmer.info is a domain that's basically full of spammers, so I blocked it. However upon doing so a thread (https://kbin.social/m/technology@lemmy.world/t/344185/I-m-worried-that-in-the-future-we-will-be-forced) I was reading basically disappeared from my feed, and on reloading it all the comments...