once i signed in to google. the detach video button dissapear.
its not happen on any other website just on youtube.
and the only to get it back is to reset the settings.
any idea why it happens?!

Edit:
Update: so appearently clearing cookies also help solving the problem. but still.. why is it happening?

the Pop up video button stopped showing up for me.
even tough the it is enabled in settings. anybody had an idea for what can cuse this?