Unreal Engine Issues

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 ...

BPGC GetPreloadDependencies() may be excluding non-DSO archetypes

Currently, UBlueprintGeneratedClass::GetPreloadDependencies() is only inclusive of subobjects instanced via CreateDefaultSubobject(). We may need to broaden it to include RF_ArchetypeObject and/or ...

A Kinematic controlled vehicle is not rendering correctly when it has a non-identity transform.

There are issues with the vehicles rendered position when it is being moved in a kinematic manner, i.e, forcibly moving a vehicle (not simulating it) using either FChaosEngineInterface::SetKinemati ...

Renaming a variable on a Blueprint will reset that variable's value on any Child BPs

If a variable is renamed on a blueprint, then any child blueprints will lose their default values for that variable and reset to the parent's default value. This resetting only happens with the Chi ...