I’m using Firefox 32.0.1 on Mac OS X Mavericks (but I guess you can reproduce it everywhere)
When clicking “Jeux” > “Solo” > “Vox Codei”, we stay on the IDE for about 1 second, and we’re automatically redirected to the results. We can see in this lapse of time a modal displaying “C’est terminé”.
Didn’t found a way to start IDE for this exercise only.
Good luck guyz and good job for your recent upgrades.