I am having an issue with creating a symbol - specifically, when I select a rectangle on the stage and create a symbol with that rectangle, the content shifts downwards on the y axis.
I've zipped and uploaded my Edge document here, so you can take a look:
https://dl.dropboxusercontent.com/u/2193278/misc/edge_bug.zip
Try creating a symbol from one of the ChartLeft/RectangleCopy shapes and see what happens.