Hello Eleanorlynch,
Welcome to Microsoft Community.
Are you referring to the "copy" feature in the screenshot below?
Usually right-click the menu bar can be directly seen by default. So I don't really understand what happened when you mentioned here that it disappeared.
The content of the right-click menu is different in different places, but there is usually a Copy option. Would you like to share more screenshot information with us so that we can know which right-click menu you are referring to?
Best Regards,
Mitchell | Microsoft Community Support Specialist