UIPopuplist strange problem

[e-tip]

Hi everyone.
i'm designing a window with ngui, before the update to 3.7.7 everything was fine with my window.
Now, as i have some time and i've learnt some new thing of unity/ngui i'm redoing the app with my knowledge, and i've upgraded NGUI to latest version ( 3.7.7 )
and now my popup list does a strange thing ( screenshot attached  Schermata 2014-12-22 alle 16.30.05.png ).
if it can help any of you when i move my field to the left i get the 2.png result.
What can i check to solve this issue ?
Thanks

[ArenMook]

If I remember correctly this issue came up and was fixed in the Pro version. I'll put up a new build of NGUI this week that should resolve it.

[e-tip]

Dear ArenMook, thanks for your reply.
I've just updated to version 3.7.7 and the problem is still there.
i've managed to solve the issue by attaching the popover to another element ( child of the previously element where my popuplist has been attached )
In the screenshot attached the non working element is the red stroked element , i've attached the popuplist to the blue element and now works

[ArenMook]

3.7.7 is from last year. 3.7.8 is the version I was talking about.

[e-tip]

Ops i mean 3.7.8

[ArenMook]

What is on the non-working element? The popup list should be on a widget, ideally.