Second issue is that sometimes when organising multiple monitors (e.g. selecting side by side extended desktop one of the screens will go white (its not the monitor happens on a few) and not let you see any UI, seems to be that tooltips still show up

Third is a few minor graphical glitches on the lockscreen (may have been reported) one screens login picture and password box are aligned closer to the right.

PC:
Intel HD 4600 gfx (i5 4670k)
16gb ram
msi G-47 PC MATE with triple monitor support. (HDMI, VGA*, DVI*)
*these are the ports i'm using


issue also on my Dell XPS l702x
i7 (cant remember model)
6gb ram
Nvidia 555m
* using mini displayport to displayport


seems like a software issue to me though as it all works and just doesnt restore settings after a reboot

Loving this OS btw, gives something for my mac friends to be jealeous about ;)
looking to use this as a full time android app/rom dev OS on the first official version after RC

EDIT: the following solved after a few reboots and some package upgrades etc:

First issue is where deepin desktop env will not remember my dual screen settings on a reboot, they are nuked each time and have to be setup each time.