Unreal Engine Issues

AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice

USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...

Distant paint/scatter grass not rendered in PT exports

Reported in SF [Link Removed] In TM 2025.1.1, in PT renders with large amounts of scattered or painted vegetation, distant grass may not appear in exported renders that would previously appear in t ...

[CrashReport] Mac crash - UE4Editor-Slate.dylib!PrepassWindowAndChildren(TSharedRef<SWindow, (ESPMode)0>)

This Mac crash originally occurred in 4.15 around March 2017, then decreased in frequency during 4.16 and 4.17. It may be starting to trend again in 4.18. There is one record of this occurring in 4 ...

Enum Compare Condition causes crash when resetting default value of right field in State Tree's Enter Conditions

In FStateTreeCompareEnumCondition::GetDescription, the Left.Enum value is mistakingly used when setting the RightValue. This causes crashes when resetting the default value of the Right field in an ...

Quality settings should not affect landscape resolution

Changing the quality settings (or having them change on you automatically in the editor) drops mips on landscape heightmap textures, which isn't desirable as it makes it look like there are collisio ...

Foliage radius does not affect other foliage assets

Setting the radius on a foliage asset does not prevent other foliage assets from being painted within that radius. Regression (no) issues (does) occur in 4.10.4 ...

SkelMeshMerge not working for meshes with >1 LOD

Reported on UDN (see Additional Info URL). Looking at code, we call USkeletalMesh::AllocateResourceForRendering for every LOD, but we should only call it once. Need to check if our SkelMeshMerge t ...

Actor Enable Collision does not affect ISM

The problem was reported via UE Bug Submission. I was able to repro with their provided test project. ...

Scene Capture Cube not affected by bloom

SplineComponent - setting roll affects tangents

Licensee reports issue with setting roll on a spline component control point. ...