Xara Designer 13 launches oddly

[Grenou]

At times, not all the time, when I launch Xara Designer 13 it only opens half-way (see attached).
Is there a setting I can tweak to get it to open fully every time?
It's not the end of the world, but very annoying.
I usually close it and start again, sometimes having to re-start 3 or 4 times before it opens as it should.
Any assistance would be much appreciated :-)

Grenou