This script disables YouTube's new rounded corners (reverts back to the previous layout from 2021.)
< YouTube - Non-Rounded Designについてのフィードバック
UPDATE: I had to clear cache browser and disabling other scripts to cause conflicting scripts from the Tampermonkey, now It's looking fine without bugs.
Script is working well, just one problem, the "subscribe" button has disappeared. The "subscribed" is nowhere to seen, but has toggle notification button.
Browser version: Chrome 108.0.5359.125