dont work namvuong.net

Does not work on Firefox Android (tested 15 June 2020)

Does not work with Facebook in Firefox for Android.

Alas, I was unable to copy from a list of users on a Moodle page.

Can not copy

Unfortunately doesn't work on Android Firefox. Tested on m.facebook.com

doesn't help

Does not work, only notifications are displayed, but the text still can not be copied