Adding in the file below solved the problem for me.
% cat /etc/fonts/conf.d/26-no-bitmap-local.conf
<!-- Add this to your font configuration e.g ~/.config/fontconfig/fonts.conf -->
<!-- Note that this will disable all embedded bitmaps in fonts that use them -->
<!-- disable embedded bitmaps in fonts to fix Calibri, Cambria, etc. -->
<match target="font">
<edit mode="assign" name="embeddedbitmap"><bool>false</bool></edit>
</match>