To enhance YouTube performance by modifying YouTube JS Engine
< Feedback on YouTube JS Engine Tamer
I believe this issue should be related to this script, but I cannot reproduce it.
Can you please check with the following:
Disable all other extensions/userscripts
Check again
Besides, what is the reproduction steps? for example, in your screen, there are 4 dialog (menu?) button. you clicked from the bottom to the top that All/Personalized -> Unsubscribe ??
When it was happening, every time I selected "Subscribed" it would open the menu. Then, I'd go to another channel on the list and tap the same button, and it would open a new menu with the options duplicated. But now, I can't duplicate it. Not sure what caused it the first time, but all of the same add-ons/scripts are still enabled and it's working fine. I'll update the review to good now, thanks for the response!
Can't comment on the effectiveness elsewhere just yet, but I've noticed this issue. With this script enabled, the dialog that opens when you're managing your subscriptions on https://www.youtube.com/feed/channels and you're trying to unsubscribe, the dialog just gets longer, repeating the options every time (check screenshot).