Copy to clipboard buttons in browser no longer working Starting yesterday, all of the sites I use frequently that have a "copy" button that copies text to my clipboard no longer work.

I can still highlight the text and cmd + c to copy, but would really like to know why the browser buttons are not working. This occurs in safari, firefox and chrome so it isn't browser related.

Running OSX 10.11.5
13in MBP retina

It is also a company computer, so please no solutions of erase and reinstall OS.
Some websites' 'copy to clipboard' buttons require Adobe Flash Player depending on your browser. Make sure flash is installed and up-to-date; see if that helps.