Comment 28 for bug 1159707

Using Linux-mint 17.3 32bit live-usb, shortly after sleep the menu, desktop and dialog boxes were not responsive to mouse clicks (neither left nor right).
It happened after clicking on "show password" checkbox in the wifi password dialog.
Other applications were working fine, and menu as well as dialog boxes were working through keyboard.

Log-out and Log-in again fixed it for me.