Spacebar grips wont work

ggiaco

I am not sure wath happen, just to last week with spacebar i can activate 4 grips like autocad lt
1) vertex selection (stretch vertex)
2) push first time spacebar: move object selected
3) push another time spacebar: rotate object selected
4) push spacebar: scale objects...
...

Now with spacebar i have same function of "enter" enter button.
Right button of mouse when a vertex is selected make appear grips window, but commands when selected by windows become inactive.

I am not sure how to make to restore grip function with spacebar to have basic grip function (move, rotate, scale, ... ) with spacebar clicks.

Thanks for help