Reddit has terrible QA or next to no automated testing it seems. Just recently, on mobile with "new Reddit", the subreddit filter for new posts just wasn't working. Just showed the top posts. If they don't have tests for that after how many years of redesign, then it must be company policy not to test.
Also on the mobile app, refreshing my feed results in a bunch of "empty" posts with media but no title. Basically every time, and for ages now. They also took away the "news" tab for a while, but then it came back again (though my wife never lost it).
Also, the fact that there's no distinction between viewing a video and looking through the comments, but that accidentally pulling down on the video fullscreens it but the reverse doesn't revert it. Plus, if you pause a video then follow a link in the thread, when you return to the thread the video starts playing again, forcing you to scroll to the top to pause it and likely losing your place.
I'm not sure if the reddit developers don't use their own product, or if they just don't give a crap, but either there's no testing going on or the developers aren't capable of fixing problems.
Either way, it always makes me laugh when I see a technical blog post about "how we did X" from the Reddit team, the last software engineering team on the planet I would take programming or infrastructure advice from.
