Problem using QGraphicsProxyWidget with Xinerama

[shobogenzo]

Hi,

I have a problem running my application under X11 with Xinerama enabled, i.e.

Section "ServerLayout"
    ...
    Option         "Xinerama" "1"
EndSection

Section "ServerLayout"
    ...
    Option         "Xinerama" "1"
EndSection

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The problem is that my popup overlay window built using QGraphicsProxyWidget gets hidden behind the main window.

A few important things to note: 1. This problem happens on multiple distributions. 2. This problem disappears if instead of using Xinerama I use TwinView (but one of the platforms I am building for requires Xinerama).

Is this a known issue? Does anyone know of a fix so that my QGraphicsProxyWidget popup will remain visible?

Thanks!