same problem here.
Old Acer PC running Windows 10 with Radeon 4670 and driver 8.970.100.9001
No problem before update to build 521. After update no text etc.
In my case the PC is not my core, just a remote that is occasionaly use.
Nevertheless the problem should be adressed.
Hope this message helps to allocate the root cause.
We’ve released a new update, Roon 1.7 Build 528, which contains improvements that we believe will help with the issues you are experiencing here. Please see our release notes below: