Cubase 8.5 - VariAudio - problem


While I am working in the VariAudio editor:
/1/ the function “Return to start position on stop” doesn’t work. The cursor stays where it is when I stop the machine;
/2/ when one of the “blocks” is selected (black) Cubase plays only this “block”;
/3/ when playing back the clip I’m just working on, the “blocks” seem not to represent what’s played at the time, I mean the cursor goes correct but I’m hearing something from neighborhood…

Anu ideas? Someone has similar issues? Up to Cubase 8 (with all updates) all went very good.

Thanks in advance for help.