We recently launched a game development PWA at https://editor.construct.net.
Like any productivity software, it has clipboard features. Users can cut, copy and paste app-specific content.
However, there's no way for JS to do a paste. So in our own (DOM-implemented) context menus, we can provide cut and copy options, but not a paste option. Users find this odd (example: https://github.com/Scirra/Construct-3-bugs/issues/96) and it's a strange quirk of using browser-based software.
Can something like
document.execCommand("paste") be standardised?