Just noticed this, not sure if anyone else is seeing the same thing...
I make a selection on a layer using the elliptical marquee tool, then go to Select>Transform Selection. Make my adjustments, and... where did the check mark go to accept? I see the Cancel Transformation icon, but no accept transformation check mark icon.
Mac Pro 5,1
2 x 2.4 GHz 6 Core
If that is what you see on your machine it either a problem on your machine (try resetting your user id Photoshop preferences) or it a Mac problem. Here is what I see on my Windows machine. View screen capture in new tab or window so you can scale it to be readable this web sits scale screen captures poorly.