Unreal Engine Issues

Material Layers "swap" location instead of shift downwards.

Licensee request for this as it is affecting productivity. Likely requires a method of allowing a user to choose which behaviour they prefer. For reference, the behaviour changed in CL 11684461 to f ...

Material Editor Crash on Parameter name that is shared in Material function

Decal can't sample 2D array

Decal materials have a compiler error when sampling a UTexture2DArray asset ...

VectorParameter UI display in the Layer Parameters Panel of MIC editor issue

Channel Mask Parameter UI display discrepancy

"Used with Particle Sprites" prevents material instances thumbnails from being editable

The thumbnails helpers will force material instances to be a plane, if their parent material is unedited. This can be worked around by editing the parent material, but editing the material instance ...

Per Instance Random node not working in material layer

Licensees report that the definition of the USES_PER_INSTANCE_RANDOM macro only considers it in the context of the base material.  As a result Per Instance Random used only in material layers does n ...

FMaterialResource::IsDualBlendingEnabled bug

The user has a proposed fix for this in the case. FMaterialResource::IsDualBlendingEnabled needs the following modification that includes MaterialInstance check: bool bMaterialRequestsDualSourceBle ...

FMaterialResource::IsTangentSpaceNormal default value behaves differently whether material uses material attributes

A UDN user has reported that a difference in appearance between two identical materials with the only difference that one uses material attributes. I have boiled down the issue to FMaterialResource ...

Cooked materials and material instances size have doubled when upgrading from 5.1.0 to 5.2.0

UDN: [Link Removed] A UDN customer has observed that their cooked materials have doubled in asset size going from 5.1 to 5.2. We need to investigate this is only a local issue on their side and no ...