The abuse by the Google Chrome team never ceases to amaze me. I feel trapped on chrome simply because of my reliance on Google drive/docs, which are handicapped on browsers like Firefox.
Switched to ProtonMail's free tier and will gradually migrate everything there aside from newsletter and software beta signups. Those emails are mostly trash anyway.
Calling the experience Handicapped is extreme, but there's clear preferential treatment toward Chrome.
If you could right click to paste, that would mean it would be possible for Javascript to access your clipboard on any site you go to. Firefox enforces the appropriate security setting here, Chrome simply has some sort of workaround built in by Google to allow them to make the UX slightly better on their own site.
The optics on that are potentially terrible.
The dominant browser from the dominant search engine company deliberately breaks a standard it enforces elsewhere only on its own sites.
Ouch.
On the other hand copy from the Docs menubar and custom right-click menu works for me right now in Firefox, with no addons that I'm aware of, so maybe this whole discussion is outdated.
Now it is possible to copy text to the clipboard using the HTML5 Clipboard API [0], (I think it might still have to be triggered based on a user input event, but I'm not positive), but reading the clipboard is still not possible, for the aforementioned security reasons.
[0]: https://developer.mozilla.org/en-US/docs/Web/API/Clipboard_A...