SDK (SSSR, probably others) cannot be built on most recent visual studio

When trying to build SSSR according to the instructions here: https://gpuopen.com/manuals/fidelityfx_sdk/techniques/stochastic-screen-space-reflections/, I cannot build the generated visual studio project, because I get an error about a bunch of hlsl files being included as both 'CustomBuild' and 'Text' item types.

Any idea how to fix this?