Recently Twitter launched a redesign. It was much lauded for how fast, performant, amazing, PWA, the future, best React and web practices it was.
When you try to switch between Twitter's own tabs, or even if you leave it alone for more than 15 minutes, the design is nothing but epilepsy on steroids.
The example in the video is not even the worst I've come across. Daily.
In the words of @nikitonsky, "Cache invalidation, naming things and maintaining scroll position"...