Unreal Engine Issues

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. ...

Instanced Subobjects on Children BPs point to Parent BP's instance if both are loaded when creating the object

The Instanced Subobject values for the Child_BP are same as what the Parent_BP subobject values are changed to before compile and saving both Blueprint Objects. Tested in 4.18.3 (CL-3832480), 4.19. ...

The UI layer system in Lyra leaks widgets when changing level

World position offset (WPO) and nanite enabled causes shadow of complex static mesh actor to be deformed at a specific distance

Context / Problem: Complex static mesh actors with nanite enabled and Evaluate World Position Offset (WPO) enabled works together except for a specific distance where the shadow is deformed and sort ...

Crash when setting Project to only use Windows and DX11 with texture compression as BC7

When user sets their texture compression to BC7 while the project settings are set for Platform to only be Windows and use only DX11 this will cause any textures with this set to cause a crash when ...

Blueprints converted to static mesh with negative scales for a component will invert the faces

Negative scaled static mesh components in a blueprint will invert their faces when converted to a static mesh. Note that this does not happen in the following situations: If the BP is scaled negat ...

'Get Distance Along Spline At Spline Point' Causes Crash

User reports that the reason for the crash is that because UpdateSpline is false on the AddSplinePointAtIndex blueprint node, this line is never called [ReparamTable.Points.Reset(NumSegments * Repar ...

[AI] Using a Reference Value for scoring in an EQS test produces the opposite effect of its tooltip.

An EQS Query scores the tests using reference values opposite of how the comments and tooltips describe. It will score items closest to the referenced value lower than those further away, but the ex ...

Masked TwoSided material causing lumen direct lighting to leak through walls

It appears that LumenScene's Hardware Ray Tracing is causing light leaking into a sealed room (which should be perfectly black). This bug does not appear to happen on AMD GPUs. ...

AnimNotifies get reproduced more times than expected.

When setting an AnimNotify to an AnimationSequence, this AnimNotify can be triggered multiple times when only set once. This issue only happens when the mentioned AnimationSequence that contains the ...