Unfortunately this addon fails reliably on a daily basis for me. It's noticeable in that Shorts often still show up, but it also sometimes does not load properly (I once even had massive icons in the background below the video) or at all (no icons, no custom colors, etc), or it causes massive CPU hog on open YT tabs which also makes any YT function act on a several second delay (even just pausing / unpausing or going fullscreen). Sometimes it helps to completely re-open a new YT tab and close the old one but that's all just temporary until things go south again shortly after.