B787 sim freeze after AP_Master toggle event

On disengaging the autopilot of the B787 by sending an ap_master toggle event the sim is freezing totally. No further inputs are possible. Is this a known issue? Can anybody confirm that?
Thanks for your assistance.
Best regards

Wow, did we find a solution to this? I cant believe months later I am still sufferings from this.

Did you find anything?

I will search the forums now.