I have a MacBook Pro running El Capitan as a host OS and Windows 8 as a guest OS under Parallels 12. After the most recent update (Parallels 12.1.1 41491), I've been having a small but frustrating issue. I use Parallels in Full Screen mode. Anytime I wake my laptop from standby or sleep, the keyboard does not work in OS X until I switch over to my VM desktop and switch back. This only happens when Parallels is running. Any suggestions on how to fix this?