Youtube Version 5.9.0.13 Verified -

One of the primary objectives of version 5.9.0.13 was the optimization of the user experience through subtle yet impactful UI tweaks. During this phase, YouTube developers were preoccupied with "polishing" the existing framework. This included smoother transitions between the video player and the search feed, as well as minor adjustments to the layout of the "Watch Later" and "History" playlists. For users at the time, these changes were not always immediately obvious, but they contributed to a more cohesive and less jarring navigation experience, reducing the friction involved in discovering new content.

If you were running YouTube 5.9.0.13 on your device, here is what your experience looked like: youtube version 5.9.0.13