I use Safari as my RSS reader on my Mac and a different RSS reader on my iPad. One thing that I’ve noticed is that Safari on my Mac is not showing me all of the articles in my RSS feeds! I figured this out after realizing that I was seeing significantly more news articles on my iPad than on my Mac.
Whenever you’re reading an RSS feed within Safari, a search box appears in the right margin to let you quickly filter your RSS articles to only those articles whose content matches what you’ve typed. However, Safari mistakenly remembers anything that you’ve typed into that search box forever. Even after you’ve quit and relaunched Safari. Even after a restart of your entire Mac! Even if you’ve accidentally typed something into that search box without realizing it, you are permanently stuck in “search mode” until you manually clear out your search. We believe that this is a bug in Safari, and we’ve reported it to Apple.
Pay close attention to the search box when reading RSS feeds in Safari. It never clears out on its own.
Once you manually clear out that search box by clicking the gray X to the right, you’ll see all the articles in the feed again. And keep an eye on that search box in the future to make sure it stays empty.