Blog custom style cached?

I created a new blog on my instance (I’m self-hosting), and did some initial tweaks using the custom CSS (in blogs → customize). Now I’ve made some changes to that CSS after publishing the first entry, and it looks fine when I’m logged-in and go to “view blog” - but in a private browser window, I still get the unfinished CSS from before I published the first entry.

I’m assuming this is cached somewhere, but it’s certainly not in my browser. And I’m not doing any caching in my nginx, so .. what do I do? Right now my entry looks “presentable” as long as I view it logged-in, but to a visitor it looks pretty crappy :-/

Halp?

Never mind. I shot myself in the foot, it seems. Sorry about the noise.

Do you know what the issue ended up being? It might be helpful for anyone else who comes across this thread.