Iceggiren i YouTube Redux
YouTube Redux sɣur omnidev0
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yeffeɣ-d deg לפני 4 שניםEdit to answer the edit: I haven't seen this sections myself for months. It's pretty much always been just a stream of thumbnails in Polymer for me. Same with the side panel being always open. Maybe you're using some other add-on/userscript that used to provide these features?