[Duplicate font issue specifically with OpenSans]

Just found this thread looking for a solution to a similar problem with Open sans fonts and affinity.

 

I'm finding that after saving and reloading the document that the correct font is showing but the Style (bold/light etc) is blank.  The result is that it seems to use a default sans font throughout the entire document.

 

This is happening on two different PC's and I've not exchanged the file between them.  I was using Skyfonts to sync from google if that makes a difference but I uninstalled that a few weeks ago and I'm still having the same problems.