Weird.. On Safari, when I access the page, I get an error saying that "Safari can't open the Page", but when I go back to Hacker News, my page zoom settings are

Weird.. On Safari, when I access the page, I get an error saying that "Safari can't open the Page", but when I go back to Hacker News, my page zoom settings are reset to the default settings until I go back one step more.. How is this possible?