Unreal Engine Issues

CLONE - ShaderCacheTool build fails

In 4.18 and 4.19, it is no longer possible to build the ShaderCacheTool. REGRESSION: Yes. The ShaderCacheTool builds successfully in 4.17.2. It looks like the missing MergeShaderCacheFiles property ...

Particles: SetFloatParameter not always having an effect

A licensee is trying to use Distribution Float Particle Parameters for the Noise properties of a Beam Particle. When trying to change these parameters in a Blueprint, some work, others don't. When ...

Grandchildren of UDataAsset are not properly registered by the Asset Manager

Any child class of UDataAsset (parent) will properly be picked up when the Asset Manager's Asset Base Class" field is set to the appropriate class. However a grandchild class (Child) with the same ...

MakeMaterialAttributes and LandscapeLayerBlend produce unexcepted results for WorldPositionOffset

For comparison, this issue doesn't seem to occur when recreating the setup with Set Material Attributes/GetMaterialAttributes. It seems isolated to the Make/Break nodes. ...

Mobile Preview - Custom Stencil 4.23 Regression

Regression when using custom stencil with in-editor mobile preview. This does NOT reproduce in MAIN at CL 9730599 ...

Plane Constraint Normal is not Properly Reset

In the Character Movement Component, setting the Plane Constraint Normal to a value other than default, and then attempting to change the value back to the default does not revert to the default val ...

Math Expression Node produces error if it calls a variable located within a hidden variable category

The math expression node in blueprints does not recognize variables that have been hidden within a blueprint category. ...

Decal Fading parameters are completely broken

Foliage is not partially loaded after InstancedFoliageGridSize is changed by WorldPartitionFoliageBuilder commandlet

Changing the InstancedFoliageGridSize by the WorldPartitionFoliageBuilder commandlet will cause some of the foliage to not load correctly. ...

Assigning a Parent Socket of a component in a child bp also changes that socket for all children and the parent, then resets to the parent default on restart

Assigning a Parent Socket of a component in a child bp also changes that socket for all children and the parent, then resets to the parent default on restart Description: Yesterday i noticed that ...