Note: This post is not about the YouTube outage from 10/16.
I've noticed that YouTube videos aren't displaying correctly (using Windows 10, Chrome browser version 69). To begin with, they are completely invisible, if I scroll past it a few times, the top bar appears (see screenshot). However, if I click on the embedded video it does then show up and plays normally.
Given that, not a big problem at all but I wanted to point it out.