This is a font issue. The font used in the popup cannot display the special characters.
In stock Windows the default font is Verdana and the characters render correctly,
If you are running Windows emulated in Linux another font may be substituted.
Try changing your base system font and see if it helps.
Developer, Bible Analyzer
But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness. (Rom 4:5 AV)