You can set sheet scale when you insert a new view via wizard (there's a button) or you can set it in the sheet tab. No need to depend on the first view.
There are controls for the view being inserted, and that can be edited anytime. But I don't know what button your talking about that will change what the draft sheet thinks the view scale is different than the first view inserted.
See below and you can set scale by RMB on the sheet tab in the lower left of your screen.
That must be new in ST8. I'm still on ST7, it's not there. I have not had a chance to update since the patch that fixed the flipping issue that was a big one for me. (like ST7 MP7 or about there). Taking 3 hours out of production for an update has not been an option.