I probably made a mistake. I am installing a new pc and I don't know what I touched but now I have this problem of the "space character" not displaying correctly.
Looks like the font you've chosen (or the one the OS is falling back on if that font isn't installed on the new machine) is missing the characters used as separators by your Windows/locale number formatting settings.
I've tried a lot and installed and uninstalled the fonts, but the problem remains the same and I can't explain it. I did the test with several fonts that work on my old PC but not on the new one.
So I used another font to get around my problem.