I really like this add-on and its extra features like setting an icon for the groups!!
...just one thing, maybe it's unrelated but it started to happen right after I installed this add-on:
- On YouTube's home page, when marking their recommended videos to "not interested/don't recommend channel", randomly they just pop back to normal and I have to set them so again!! Very annoying!! Could you fix this please?

*** I can't screen grab it because it happens randomly but MANY times!!
Try to mark ""not interested" a full row of recommended videos, scroll down and they will pop back to normal!!