On my profile it says that I currently have done 4 Survivor build challenges and 2 killer ones, but as of now I’ve never actually done a build challenge. I suspect this is because I use very unique perks and it detects it as a build challenge. This isn’t a very major bug, but it’s just kinda strange.
Hey, the build challenge is mainly intended to incentivise/provide a reward for running less meta perks. Because of that it isn’t limited to builds you’ve seen on the “generator” as the end goal would be for people to be coming up with their own ideas and experimenting by themselves. In other words, claiming unique builds regardless of build “generator” usage is the intended behaviour, hopefully that makes sense.