This script will revert all UI changes prior to late 2022 (which disables rounded corners on everything and reverts 2019-2022 backgrounds.)
< 腳本YouTube - Revert UI changes before late-2022 (Non-Rounded Design)的回應
Edit: There is dislike bar UI issue (only in disliked video), but you have to refresh it first for the bug to take effect. I've included screenshots of it.
p/s: I'm using RYD 3.0.0.6 extension with your Old Icons Restorer (they look nice!)
Works perfectly well and compatible with RYD.