I constantly need to share links with my friends or colleagues. Often, these are pictures of cats, like with most internet users, but I prefer using a copy button, like in Chrome's mobile versions. I really like this use pattern, even though the Share menu is powerful.
The idea: please, add a copy button for opened links in Android Firefox.
Of course, without an exact reproduction of what Chrome has, but it will significantly increase the productivity of distributing cats in group chats.