Yes, this is a strange problem... It seems that there are settings on your pc that AM has problems with...
Have you also tried to de-install and re-install AM?
Btw, you could also try to set your font to "large", reboot your pc, check AM. Then set font to "normal" again, and reboot your pc. This is a method that sometimes works with other software that has problems with the font settings...
If these things don't work, maybe GM has an idea where the cause could be?