Scaling an image

Command, alt, i, brings up the image window. That's not what I want to do. Say I have a shape on a layer (other than a square). I simply want to select it, command T it, and then scale it up or down holding the shift key to constrain. But it doesn't do that. Looking at the calibrations I'll see something like w112.56, and h112.72. If I click on that chain link first, then it works but that's an extra step that shouldn't be necessary.

Do you mean Snap Vector Tools and Transforms...? Yes, it's checked. Thanks so much for trying to help, btw. When you say you "don't have that on mine" you mean it works the way I'm describing it should work?

Yeah I tried turning off before replying to you. No difference. You're saying you don't have the same issue I have? A friend of mine has the same issue Ihave.