The latest update of iCloud for Windows (version 4.0.x) may result in some odd appearance of in your CorelDRAW Graphics suite X6.x and even some unexpected behaviour. Please revert back to the previous version of iCloud for Windows and contact Apple support. Alternatively, you can use the following workaround until the problem is resolved by Apple:
You can change the decimal symbol defined in the OS to be something other than a comma by doing the following:
1) Open the Control Panel
2) Select Regions and Languages
3) On the Formats tab select "Additional settings..." button.
4) On the Numbers tab change the "Decimal symbol" to the . symbol (period) (you may need to type the decimal into this regional settings field rather than selecting it from a dropdown).