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Linux dual screen problem - dropdown menus appear on left screen if FF in full screen mode on right screen

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Hello everybody,

Kubuntu 14.04 LTS, FF 42.0 dual screen setup (NVIDIA)

If I run FF in full screen mode on the ***LEFT*** screen, the dropdown menus are working fine, i.e. "dropping down" under the respective menu point.

In full screen mode on the ***RIGHT*** screen all FF dropdown menus appear at the right border of the ***LEFT*** screen.

Bug or feature?

It used to be fine in the past. I cannot recall whether FF behaviour changed after a recent re-installation or a FF update.

Kind regards, Jörn.

Hello everybody, Kubuntu 14.04 LTS, FF 42.0 dual screen setup (NVIDIA) If I run FF in full screen mode on the ***LEFT*** screen, the dropdown menus are working fine, i.e. "dropping down" under the respective menu point. In full screen mode on the ***RIGHT*** screen all FF dropdown menus appear at the right border of the ***LEFT*** screen. Bug or feature? It used to be fine in the past. I cannot recall whether FF behaviour changed after a recent re-installation or a FF update. Kind regards, Jörn.