I'm not sure which graphical bugs you are referring to, but I can look into them! Page slowdowns even when thumbnails are not being replaced is something I can try looking into.
Anyway, thanks for giving it a try :)
Hi, sorry for wording my response overly emotional.
The bugs and glitches:
- Duplicate edit and logo buttons.
- Flickering channel banners when trying to view all videos
- Video recommendation sidebar changing position due to frequently changing titles
- Longer page building times due to frequent rerendering and injecting attempts (probably causes mulitple edit buttons)
- Probably more
Basically, it makes youtube feel overall sluggish and breaks the UI frequently. This tool is too aggressive trying to inject new titles and thumbnails.