It's related because it's another example of discovering a local symptom and attempting some investigation before emailing YC/PG.

I attempted an analogous investigation before posting. I tried Private Browsing mode, which worked. I tried different browsers, which didn't. The next step in my investigation before emailing YC/PG was to find out if it was just me on this local network, and the only way I had to investigate that was to ask someone else. The only way I could do that was to post to HN. It seemed the obvious next investigatory stage.