I couldn't find any sensible place to report bugs, so putting it here. Please let me know if there is more suitable place.
Repro steps:
Install com.htc.upm.wave.xrsdk package to Unity project.
Build for UWP platform from Unity.
Open visual studio solution.
Right click on main project. Publish -> Create app packages
Choose "Sideloading" and follow through process until apps, msix, appxbundle or msixbundle is produced
Run Windows App Cert Kit and choose generated package, follow steps to run tests
App will fail on "Support API Tests" siting use of restricted APIs in 3 DLLs. wvr_plugins_directpreview.dll, RRServerReportAPI.dll and RRServerManageAPI.dll
Expected result:
UWP apps can be built including the com.htc.upm.wave.xrsdk package without failing certification.
Additional information:
This can be worked around by creating a copy of the com.htc.upm.wave.xrsdk package and modifying the offending DLL import settings in Unity to exclude the UWP platform.