ISSUE: can't access Spaces view from the Spaces icon button in the main menu bar

I can go to a Space (by number).

I can go to the Spaces preferences.

But I can't go the Spaces view !

Yes, I know one can use F8, but then I have to drop the mouse and use the keyboard. Then I have to go the mouse again, because apparently there is no keyboard way to move a Window to a chosen Space !