If you don’t know, Universal Links allow a website and iOS app to be linked together so following a link opens up the app (with the right content) instead of the website. For example, following a link to a Vine video can open up straight in the Vine app; where the video looping experience is much better than the website.
Universal Links are great and I love them, but there is one app that totally screws this up — YouTube. Perhaps this changed recently, but up to about a month ago, I had to use the YouTube app after clicking any YouTube link to watch a video (embeds were exempt from this) — this completely broke down when using Tweetbot or Twitter, breaking my flow and forcing me to jump between apps. I finally uninstalled the app.
This caused one more huge problem. The YouTube app does not offer every setting and option that their website does, especially in terms of managing my own videos. Normally I would just open the desktop site in Safari, but because of Universal Links, it would switch me over to the app every single time that I tried to do so. Unacceptable.