In about:config, set dom.event.clipboardevents.enabled to false.
In about:config, set dom.event.clipboardevents.enabled to false.
You don’t need this - In about:config, set dom.event.clipboardevents.enabled to false. No Addon needed.
deleted by creator
I just found it recently when DFWP failed to allow me to paste on a site (which happens quite often in my experience). I had the same thoughts about this setting but so far I haven’t noticed anything. I keep it open in a tab in case I need to toggle it though.