Steps to reproduce:
1.Open the Visual Editor for a page which contains an internal link with FireFox
2.Copy the link and paste it into another VE
3.Save the page.
Observed Result:
After copy a "[[example|example]]" link, when pasting the link is turned into a "example" link.
It appears as follows: https://fr.wikipedia.org/w/index.php?title=Utilisateur:NemesisIII/Brouillon&diff=100540861&oldid=100181721
With Firefox 28, at least on fr.wp . (Sorry for my bad English)
Version: unspecified
Severity: normal