I wrote a VBA Macro a while back when I had Excel 2010 and it worked flawlessly. The result was a chart that at the end was moved to a dedicated new "diagram sheet" (so not a normal worksheet, but those ones who shows only graphic data).

Today I needed to use that macro again, I tried it on Excel 2013 and... The chart would be correctly moved to this other dedicated sheet, but it was miniaturized! 

![enter image description here](https://i.stack.imgur.com/Coom1.jpg)

It was not possible to make it bigger and zooming in was of no help! 
I thought my Subroutine was flawed, but I had to try to move the chart manually to another sheet before... I got the same result! Closed Excel and reopened... Same result.

Now, does Excel 2013 have some stupid options set, so that those charts cannot be used, or is it a bug? ...And more important... How do I make this thing work?