Same here.
Every time my Mac (host) goes to sleep with the Windows 10 (guest) running, Fusion 8.0.1 crashes. The VM is still seen as running. Usually re-opening Fusion and restarting the VM allows it to continue from where it dropped off. Very annoying & frustrating considering I use the VM for my daily work.
Interestingly, this seems to only occur with my Win 10 VM. If I run my Ubuntu Linux VM I do not experience this issue.
I'm currently running OS X 10.11.1 El Capitan