Unreal Engine Issues

SceneQuery: UWorld::SweepSingleByChannel doesn't return BoneName on skeletal meshes with per-poly collision enabled

Scene queries when encountering skeletal meshes with per-poly collision enabled do not return a bone name in the HitResult. Returning the BoneName always or having it as an option via FCollisionQuer ...

Missing shadows when combining CSMCaching and Nanite

A Nanite primitive casting a CSM shadow on another Nanite primitive with "Cast Shadows" disabled, will have it's shadow disappear completely when r.Shadow.CSMCaching = 1. ...

Breakpoints don't work in Anim Node Functions

Anim node functions are difficult to debug because breakpoints don't get triggered, and printing is difficult from within the function too. ...

Cooker Generated Packages: Actors can trigger the "load" of generated packages from linker load and load them incorrectly

Generated packages have to be constructed by the cooker via FGeneratorPackage::CreateGeneratedUPackage. Some fields on the UPackage are set and ICookPackageSplitter->PopulateGeneratedPackage is call ...

Variant Thumbnails are washed out

I think somewhere in Thumbnail Generator::Generate Thumbnail FromTexture() is applying this washout. ...

Memory leak in Array draghandles in PropertyEditorHelpers.cpp

Crash when calling UPoseableMeshComponent::CopyPoseFromSkeletalComponent() from Actor's Tick while unregistering

Under certain conditions, it appears that the function UPoseableMeshComponent::CopyPoseFromSkeletalComponent may crash because the BoneSpaceTransforms obtained from the source component are empty, p ...

Fast Track icon is not displayed when variables is not connected to the AnimGraph

The Fast Track icon is not displayed when there are no variables connected to the AnimGraph. This issue was not present in UE4. ...

DataTable with structures containing TArray and TMap keeps increasing memory while no rows are selected

When using a DataTable based on a structure that includes TArray or TMap, if a row is not selected, the memory usage will continue to increase. This is because in SDetailsViewBase::Tick, ForceRefr ...

Crash when double-clicking landscape editor splines point tangent

When double click splines point tangent, the editor will crash.  This issue related to [Link Removed], it didn't care about double-click case. Workaround: void FEditorViewportClient::ProcessDoubl ...