Use this in the "my filters" section in ublock:

youtube.com##+js(set, yt.config_.openPopupConfig.supportedPopups.adBlockMessageViewModel, false)
  
youtube.com##+js(set, Object.prototype.adBlocksFound, 0)
 
youtube.com##+js(set, ytplayer.config.args.raw_player_response.adPlacements, [])

youtube.com##+js(set, Object.prototype.hasAllowedInstreamAd, true)

! 2023-10-16 https://www.youtube.com
www.youtube.com##tp-yt-paper-dialog.ytd-popup-container.style-scope
www.youtube.com##.opened

Occasionally you might not be able to scroll but that's stopped for me now. When it does happen you can full screen a video and un-fullscreen and then it'll be fine though.