Hi all,
Lot of time to fix this problem 
After try some solutions describe on this post (without efficient result) I’ve just unchecked the “block the popup windows” in Firefox : preferences => content.
And that’s work perfectly… But remember that is a default option of Firefox. So managable in an Intranet/Extranet, not on a public website ;(
Happy new year 2016 to all,
LMJ