First downgraded the following with negative results:
> xserver-xorg-core:amd64 (2:1.18.3-1ubuntu2.3, 2:1.18.4-0ubuntu0.1)
Then downgraded to the following with positive results:
> compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
> compiz-core 1:0.9.12.2+16.04.20160526-0ubuntu1
> compiz-gnome 1:0.9.12.2+16.04.20160526-0ubuntu1
> compiz-plugins-default:amd64 1:0.9.12.2+16.04.20160526-0ubuntu1
The system is presently stable as it was prior to the upgrade.
First downgraded the following with negative results: xorg-core: amd64 (2:1.18. 3-1ubuntu2. 3, 2:1.18. 4-0ubuntu0. 1)
> xserver-
Then downgraded to the following with positive results: 2+16.04. 20160526- 0ubuntu1 2+16.04. 20160526- 0ubuntu1 2+16.04. 20160526- 0ubuntu1 plugins- default: amd64 1:0.9.12. 2+16.04. 20160526- 0ubuntu1
> compiz 1:0.9.12.
> compiz-core 1:0.9.12.
> compiz-gnome 1:0.9.12.
> compiz-
The system is presently stable as it was prior to the upgrade.