Removed particles simple lighting from the release. Properties and keywords are not working due to shader GUI referencing PBR properties.

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightStandardParticles.shader

         }
     }
 
-    Fallback "LightweightPipeline/Particles/Standard (Simple Lighting)"
+    Fallback "LightweightPipeline/Particles/Standard Unlit"
     CustomEditor "LightweightStandardParticlesShaderGUI"
 }

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightStandardParticlesSimpleLighting.shader.meta

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ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightStandardParticlesSimpleLighting.shader

-// ------------------------------------------
-// Only directional light is supported for lit particles
-// No shadow
-// No distortion
-Shader "LightweightPipeline/Particles/Standard (Simple Lighting)"
-{
-    Properties
-    {
-        _MainTex("Albedo", 2D) = "white" {}
-        _Color("Color", Color) = (1,1,1,1)
-
-        _Cutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5
-
-        _Shininess("Shininess", Range(0.01, 1.0)) = 1.0
-        _GlossMapScale("Smoothness Factor", Range(0.0, 1.0)) = 1.0
-
-        _Glossiness("Glossiness", Range(0.0, 1.0)) = 0.5
-        [Enum(Specular Alpha,0,Albedo Alpha,1)] _SmoothnessTextureChannel("Smoothness texture channel", Float) = 0
-
-        [HideInInspector] _SpecSource("Specular Color Source", Float) = 0.0
-        _SpecColor("Specular", Color) = (1.0, 1.0, 1.0)
-        _SpecGlossMap("Specular", 2D) = "white" {}
-        [HideInInspector] _GlossinessSource("Glossiness Source", Float) = 0.0
-        [ToggleOff] _SpecularHighlights("Specular Highlights", Float) = 1.0
-        [ToggleOff] _GlossyReflections("Glossy Reflections", Float) = 1.0
-
-        [HideInInspector] _BumpScale("Scale", Float) = 1.0
-        [NoScaleOffset] _BumpMap("Normal Map", 2D) = "bump" {}
-
-        _EmissionColor("Color", Color) = (0,0,0)
-        _EmissionMap("Emission", 2D) = "white" {}
-
-        _SoftParticlesNearFadeDistance("Soft Particles Near Fade", Float) = 0.0
-        _SoftParticlesFarFadeDistance("Soft Particles Far Fade", Float) = 1.0
-        _CameraNearFadeDistance("Camera Near Fade", Float) = 1.0
-        _CameraFarFadeDistance("Camera Far Fade", Float) = 2.0
-
-        // Hidden properties
-        [HideInInspector] _Mode("__mode", Float) = 0.0
-        [HideInInspector] _FlipbookMode("__flipbookmode", Float) = 0.0
-        [HideInInspector] _LightingEnabled("__lightingenabled", Float) = 1.0
-        [HideInInspector] _EmissionEnabled("__emissionenabled", Float) = 0.0
-        [HideInInspector] _BlendOp("__blendop", Float) = 0.0
-        [HideInInspector] _SrcBlend("__src", Float) = 1.0
-        [HideInInspector] _DstBlend("__dst", Float) = 0.0
-        [HideInInspector] _ZWrite("__zw", Float) = 1.0
-        [HideInInspector] _Cull("__cull", Float) = 2.0
-        [HideInInspector] _SoftParticlesEnabled("__softparticlesenabled", Float) = 0.0
-        [HideInInspector] _CameraFadingEnabled("__camerafadingenabled", Float) = 0.0
-        [HideInInspector] _SoftParticleFadeParams("__softparticlefadeparams", Vector) = (0,0,0,0)
-        [HideInInspector] _CameraFadeParams("__camerafadeparams", Vector) = (0,0,0,0)
-    }
-
-    SubShader
-    {
-        Tags{"RenderType" = "Opaque" "IgnoreProjector" = "True" "PreviewType" = "Plane" "PerformanceChecks" = "False" "RenderPipeline" = "LightweightPipeline"}
-
-        BlendOp[_BlendOp]
-        Blend[_SrcBlend][_DstBlend]
-        ZWrite[_ZWrite]
-        Cull[_Cull]
-
-        Pass
-        {
-            Tags {"LightMode" = "LightweightForward"}
-            HLSLPROGRAM
-            // Required to compile gles 2.0 with standard srp library
-            #pragma prefer_hlslcc gles
-            #pragma vertex ParticlesLitVertex
-            #pragma fragment ParticlesLitFragment
-            #pragma multi_compile __ SOFTPARTICLES_ON
-            #pragma exclude_renderers d3d11_9x
-            #pragma target 2.0
-
-            #pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON _ALPHAPREMULTIPLY_ON _ALPHAMODULATE_ON
-            #pragma shader_feature _ _SPECGLOSSMAP _SPECULAR_COLOR
-            #pragma shader_feature _ _GLOSSINESS_FROM_BASE_ALPHA
-            #pragma shader_feature _NORMALMAP
-            #pragma shader_feature _EMISSION
-            #pragma shader_feature _FADING_ON
-            #pragma shader_feature _REQUIRE_UV2
-
-            #define BUMP_SCALE_NOT_SUPPORTED 1
-            #define NO_SHADOWS 1
-            
-            #include "LWRP/ShaderLibrary/Particles.hlsl"
-            #include "LWRP/ShaderLibrary/Lighting.hlsl"
-
-            VertexOutputLit ParticlesLitVertex(appdata_particles v)
-            {
-                VertexOutputLit o;
-
-                OUTPUT_NORMAL(v, o);
-
-                o.posWS.xyz = TransformObjectToWorld(v.vertex.xyz).xyz;
-                o.posWS.w = ComputeFogFactor(o.clipPos.z);
-                o.clipPos = TransformWorldToHClip(o.posWS.xyz);
-                o.viewDirShininess.xyz = VertexViewDirWS(GetCameraPositionWS() - o.posWS.xyz);
-                o.viewDirShininess.w = _Shininess * 128.0h;
-                o.color = v.color;
-
-                // TODO: Instancing
-                // vertColor(o.color);
-                vertTexcoord(v, o);
-                vertFading(o, o.posWS, o.clipPos);
-                return o;
-            }
-
-            half4 ParticlesLitFragment(VertexOutputLit IN) : SV_Target
-            {
-                half4 albedo = SampleAlbedo(IN, TEXTURE2D_PARAM(_MainTex, sampler_MainTex));
-                half3 diffuse = AlphaModulate(albedo.rgb, albedo.a);
-                half alpha = AlphaBlendAndTest(albedo.a, _Cutoff);
-                half3 normalTS = SampleNormalTS(IN, TEXTURE2D_PARAM(_BumpMap, sampler_BumpMap));
-                half3 emission = SampleEmission(IN, _EmissionColor.rgb, TEXTURE2D_PARAM(_EmissionMap, sampler_EmissionMap));
-                half4 specularGloss = SampleSpecularGloss(IN, albedo.a, _SpecColor, TEXTURE2D_PARAM(_SpecGlossMap, sampler_SpecGlossMap));
-                half shininess = IN.viewDirShininess.w;
-
-                InputData inputData;
-                InitializeInputData(IN, normalTS, inputData);
-
-                half4 color = LightweightFragmentBlinnPhong(inputData, diffuse, specularGloss, shininess, emission, alpha);
-
-                ApplyFog(color.rgb, inputData.fogCoord);
-                return color;
-            }
-
-            ENDHLSL
-        }
-    }
-
-    Fallback "LightweightPipeline/Particles/Standard Unlit"
-    CustomEditor "LightweightStandardParticlesShaderGUI"
-}