[ubuntu] 15.10_64bit 3 xsessions DISPLAY=:0.1 lands 0.0

Ok ruing Nvidia prop drivers... Configures 3 xsessions (worked in 14.04, 15.04) ..

0.0 = middle screen ruing gnome metacity (1920x1080)
0.1 = left screen (1360x768)
0.2 = right screen (1920x1080)

Of course you cant drag things across - which is great, how i want it...

Normally i used to use commands as such "DISPLAY=:0.1 vlc" which use to result in vlc starting on the given screen..

Problem i have now is no matter what i select and choose - everything opens on 0.0

Did read in launchpad there was this bug a few releases ago..

Any ideas howto solve this.?