Font shows different letters after setting to bold

Hello.

When I write a text in CorelDraw X6 and use the regular font setting everything looks great. When I switch to BOLD Corel changes the letters and than the text is no more the same.
When I change the font setting in Word it shows the right text only in BOLD. It worked in Corel Draw X3 befor - here was the text bold and the text was the same.
I reinstalled the font - nothing changed.
When I export the file to PDF, JPG or anything else it looks like the regualr text only in BOLD, also, when I convert the text to curves it looks also good.
Can anyone help me?  Thanks in advance.

Attached is the picture: