Noticed an issue lately with snapping sketch elements to where we want while sketching in Inventor 2013. We finally figured out what is going on. In Inventor sketching if you are in the rectangle command and you depress the left mouse button, then while holding it down you slide the pointer somewhere else on the screen and release the button, the corner of the rectangle snaps down where you RELEASED the button.
We bounce between AutoCAD and Inventor and In AutoCAD 2013 when you execute the rectangle command and you depress the left mouse button and while holding it down you slide your mouse pointer somewhere else on the screen, the first corner of the rectangle snaps where you DEPRESSED the mouse button, not where you released it as Inventor does.
This issue is similar with any sketching/drawing elements. In AutoCAD it snaps when you press the button down, in Inventor it doesn't snap until you release it. So if you move even slightly in Inventor sketching before the mouse button resets and settles your sketch point will not be where you wanted it, often just slightly away from the snap point you were over when you depressed the button.
To use AutoCAD and Inventor you have to totally change your mouse function syntax when you go between the two. We find Inventor sketching to be prone to incorrect points causing sketches to not be closed and lots of extra work to examine and repair. Or pausing and waiting each and every time you click the mouse while sketching. Both impact efficiency and productivity.
See no reason Inventor sketching and AutoCAD drawing can't treat the mouse clicks the same. Making the mouse function in Inventor that same as AutoCAD would boost efficency and reduce frustration with Inventor.