Please describe the problem:
1st, I am not certain that I filled the bug in the right section. It seems to my knowledge to be a gnome issue with keyboard and shortcut management.

Once the problem started, I was unable to use my keyboard multimedia keys anymore (or shortcut keys), and the CTRL button was working partially for what I wanted.

Steps to reproduce:
1. Go to  System => Preferences => Mouse
2. On the first tab, activate the functionnality for "Display the mouse when the CTRL key is hit"



Actual results:
It activates the functionnality, then the multimedia keys stop working.

Expected results:
I would expect them to continue working normally, and I would expect the CTRL key to behave normally except when hit then release without any other action, which should display where the mouse is.

Does this happen every time?
Both times, yes.

Other information:
It took me a long time to find the root cause of this. I was unable to remember what action causes that issue, and forums weren't of much help.