My previous post confirming the problem on Ubuntu isn't yet approved but I found a solution for the flickering cursor so I'm hoping the 2 posts will appear in order.
There was a similar problem in wasteland on gnome3, and someone posted a fix here:
http://steamcommunity.com//app/240760/discussions/1/613936673400191099/
The actual fix is a simple command line command: gsettings set org.gnome.settings-daemon.plugins.cursor active false
Alternatively you can use the application dconf Editor, navigate through the tree:
gnome
|_settings-daemon
|_plugins
|_cursor
And click off the checkbox next to active.
After that restart light-dm (or reboot) and you're set.
I've tried this on my ubuntu install with Unity interface and should work for gnome 3 too.
Success!