How to reproduce:
1. Import the attached package
2. Open Shader Graph that is assigned to VFX
3. Add Virtual Texture property and save ShaderGraph
Expected result: Only warning: blackboard properties in Shader Graph are currently not supported in Visual Effect shaders.
Actual result: Undeclared identifier 'alphaThreshold', ignoring duplicate keyword line 'multi_compile_fog __ FOG_LINEAR FOG_EXP FOG_EXP2' are also thrown to the console
Reproducible with: 2022.2.0a4 (14.0.1)