Control + R repeat short cut stopped working how it used to.

So literally a few minutes ago it was working as I've always used the Control+R shortcut and now its not working as it usually does for me. It appears to be working but just not in the way I usually use it. 

So generally for quick copies and even spacing of those copies I will drag the object holding shift and right click to make a copy and then use control+R to repeat that action to make a bunch of evenly spaced copies, its super handy! Now it just doesn't do anything when I use control+R. If I just move an object and use the shortcut it will just repeat the movement of that object. 

Did I turn a setting on or off with this? what's going on?