Hi Marcello,
Thank you for your interest in Syncfusion products,
I am able to reproduce the alignment issue only in Office 2000 and this issue has been fixed in our latest development build V6.4.0.3. Please download the latest development build from the below link:
http://www.syncfusion.com/downloads/product/build.aspx Please download and test the issue and let us know if this helps you.
Best Regards,
Bhuvana