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This script disables YouTube's new rounded corners (reverts back to the previous layout from 2021.)
< Spätná väzba na YouTube - Non-Rounded Design
@xX_LegendCraftd_Xx just ignore @"CY Fung" this author is very sneakily trying to promote his script in your feedback section (I am considering reporting him, I had to ban him from my repo on GitHub for another selfish action)
there is update in "YouTube EXPERIMENT_FLAGS Tamer" script.
Please update the section or just remove it.
And I believe using your own flag settings in YouTube Web Tweaks would be better, coz "YouTube EXPERIMENT_FLAGS Tamer" might conflict for your settings.
OR you can change to this https://greasyfork.org/en/scripts/473685-youtube-experiment-flags-tamer-basic instead.