...and haven't seen this problem with IE, Chrome, or Firefox. You say you're trying to paste into a document; what kind of document? Notepad, Wordpad, Word, LibreOffice, Wordperfect, what? Are you running in Metro (aka Modern) mode or desktop? If not desktop, get Classic Start from http://www.classicshell.net and stay away from Metro mode. It's buggy and most folks have found it very unproductive.
I have windows 8 - I had created a doc on facebook and find that I can not paste URLs into this document.
I have tried using Google Chrome, Internet Explorer 8 and now Firefox.
I could not find any help on this issue anywhere, read oodles of help files but nothing on this subject.
eventually I managed to copy on all 3 servers but I could not paste into my document using any of them.
I have now got it to work on Firefox (after several goes)but Google Chrome is my main server (it works better for the things I do), and I believe it is a W8 issue, so does anyone know how to paste URLs using W8? thanks

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