I am pretty sure I identified the issue.
1. I did a clone of my partition and reset compiz && unity as follow:
dconf reset -f /org/compiz/
setsid unity
2. I tested openings many instances of Shotwell Viewer by right-clicking Open
With-->Shotwell Viewer (for 30 pictures)
3. When changing the value:
** Summary changed:
- compiz crashes while opening multiple instance of an application
+ compiz crashes while opening multiple instances of an application
** Description changed:
- To reproduce this bug, you can create multiple files (ex.: 30 text files, you
right-click and choose to open it wi
