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Watch page description below the video with proper open/close toggle, instead of a side bar.
< YouTube - Proper Descriptionについてのフィードバック
Oh, just toggle the script off and back on (or toggle the entire extension off and back on) always worked for me!
By the way, does after a while of using it revert back to the new description layout? A lot of people have been saying that and is it true? If so, how to fix it?