Comment 22 for bug 1359199

I have Mint 18, before that I used Mint 17 and before that Ubuntu 12.
On all of these the focus follows mouse exhibits this or similar behaviour.
After an apparently arbitrary amount of time focus follows mouse stops working and refuses to work again until re-login.
I have not been able to link it with any specific application, but for example this last time Chromium crashed and broke focus follows mouse.