SCLogin - Joomla Login/Logout Redirection URL - NO Scroll

Hi,
I was working with Joomla 3.1.5 + JFBConnect 5.1.1
I usually work with a "Clone" site that I keep clean and I use for backup and clone for begin all my joomla sites.
So, I backup it and clone to a Test site (I'm testing registration with Seblod etc.).

Now JFBConnect 5.1.2 is out, so I decide to update it on Test site and in SCLogin > Options > I set Joomla Login/Logout Redirection URL = Home
After few tests I came back to my Clone site and I update JFBConnect to the last 5.1.2, then I thought to change also my Login/Logout Redirection URL = Home as for my Test site, but with surprise I cannot! Simply because there is no the Scroll !!! - Take a look on the images I attach.

I check and all settings are the same on the two installations, I clear Joomla and Browser chace, I re-install the JFBConnect 5.1.2 - but nothing, the Scroll in the Clone site there isn't for the Logout Redirection option, but also for the Login Redirection option.

1 - In first of all, Please, Am I missing any setting ?!?
2 - Otherwise the only thing I can dubt is that, as I wrote, my Clone site is yet clean, so no new menus created, while in the Test site I have yet created new menus (and may be this solve the issue).

Many Thanks for Support!

Is a problem because without the possibility to scroll I cannot select the "Home" in Logout option.

Tested, I confirm you:
- Last joomla 3.1.5 + last JFBConnect 5.1.2
- on the two installations all settings are the same
- Joomla and Browser chace completely clear
- I re-install the JFBConnect 5.1.2
- Tested on Chrome and Internet Explorer browsers
= nothing, the Scroll in the Clone site isn't shown for the Login and Logout Redirection option. It's too strange because the Test site is the exact copy of the Clone site.

Right now I cannot test it, but however, as I wrote my Clone site is yet clean -> no new menus created (while in the Test site I have yet created new menus), I doubt that's the reason of this "bug" and may be can solve the issue.
Please, let me know if you can check this issue. Othewise, asap, I'll investigate on my doubt...