I am having a similar issue. I recently got a new computer. The old one has no issues with any "after market" installed fonts.
My new computer however does not list them as options in the text style window. I have tried restarting the software and restarting my computer.
I have checked in my fonts folder on the computer and they are there. It feels like there is some setting that I need to adjust but I dont know what it could be. Any help would be appreciated.