When pressing the share button on a reading list, a page appears that says “A user on this site has created a reading list to share with others (probably you).” It’s confusing, as not “a user” created the reading list, but you; and this user certainly doesn’t want to share with you, as your own reading list is already available for yourself without any sharing. I’d expect a different page to appear, from where I can easily share the link – for example by highlighting it in a textbox and copying it; pressing a button to copy it; and/or by using the Web Share API (which works also in certain Windows and macOS browsers, not only in Android and iOS ones).