Photoshop: Spacebar scroll not working in Ps on Mac using Sierra

Can you elaborate what you mean by Spacebar scroll?

Yes sure, the hand does not appear anymore when you want to move about in a zoomed image when using another tool especially the pen or the lasso tools. I hope that makes it more understandable
Sorry this went into my Junk Mail.
Now having said this once I'd rebooted, like another help said, its back working again, thanks for the help.

hi there, I used PS for 10 years on PC now. Everything was more less fine. Now I switched to mac and the "hand dragging" functionality is not working. That's a bad joke. Also not working for moving selections on the fly...