Q:

No hover feedback in OS X Yosemite

I recently upgraded to OS X Yosemite. Everything works fine but for some odd reason my cursor fails to highlight (provide feedback on anything I hover on any options).
As an example (if I'm not explaining this very well):

When I hover over the options in the Safari menu (or any other menu, nothing shows up as a blue background as you would expect (it only turns blue after I've clicked it).  
I've been running Mavericks for a long while, and I had no issues.  
I'm not sure if the mouse has a part to play, I'm using Mad Catz R.A.T3, anyone know if this as an issue with Yosemite? Or are aware of a fix?

A:

I had the same issue with my Mad Catz MMO 7 and I fixed the problem! If you download the latest driver software from http://madcatz.com/downloads/ for Mavericks (OS X 10.9) it fixes the problem. You will have to restart your computer in the process.

A:

I reached out to MadCatz support and they have a workaround to get the Mavericks drivers working in Yosemite:

Go to System Preferences -> Security & Privacy -> Privacy -> Unlock to
  make changes
In the list "Allow the apps below to control your computer" ticked the
  following:

MadCatzSmartTechnology
Mad Catz Editor”

A:

For me the same with a Logitech MX connected to a unifying receiver. I did repair the mouse with the Unifying software provided by Logitech and then it worked again. 

