For copy/paste to work on Google Docs using the keyboard (Ctrl+C, Ctrl+X, Ctrl+V), it needs dom.event.clipboardevents.enabled to be enabled.

We could however disable dom.allow_cut_copy (introduced in https://bugzilla.mozilla.org/show_bug.cgi?id=1170911) since that appears to only be required for using the clipboard using the mouse UI.

I'm not sure what the best path forward is here, but here are ideas:

• adding a comment to mention keyboard clipboard operations next to the dom.event.clipboardevents.enabled pref
• commenting it out the pref by default to prevent breakage
• adding dom.allow_cut_copy = false by default to prevent sites from tampering with the clipboard contents