I’m on DigitalOcean and it works just fine. So, I would say that error is not by DO. That would be quite strange anyway. Discourse doesn’t know which cloud server it is living in 
I got similar issue some time ago, but I had more problems with time stamps of topics. Rebuilding fixed it. Was it because of someking caching issue or was there a bit or two in wrong position… not a slighest idea, but rebuilding helped.