Unreal Engine Issues

UClass::SparseClassDataStruct null at editor-time for child blueprints until compile

Child blueprints of a blueprint of a native actor class with sparse data can have an incorrectly null SparseClassDataStruct value, and thus fail to initialzie their SparseClassData. This affects edi ...

Translucent materials with Modulate blend mode disappear with down-res translucency enabled

Reported from this UDN: https://udn.unrealengine.com/s/question/0D5QP00000MLlco0AD/active-dtr-doesnt-render-beforedofmodulated-materials?fromCase=1 The problem is that, except in very specific circ ...

Editing an array config property via ProjectSettings can end up editing other platform config properties.

Platforms .ini config files can end up with incorrect data, due to how ProjectSettings manages the config data. On a Windows machine, if we open the ProjectSettings window, all the data is going to ...

[bink video]Auto importing bk2 creates an asset with wrong path

Here is a work around : #include "binkplugin_ue4.h" UObject* UBinkMediaPlayerFactory::FactoryCreateBinary( UClass* Class, UObject* InParent, FName Name, EObjectFlags Flags, UObject* Context, co ...

Nanite mesh shadows not updating when CSMCaching enabled

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. ...

CPF_TextExportTransient and RF_TextExportTransient inconsistent behavior

The TextExportTransient can be specified as a property flag and object flag. Behavior is inconsistent: there are many ways in which an object marked TextExportTransient can still be part of the text ...

Stale VSM pages after HLOD transition

Virtual Shadow Maps do not invalidate pages when HLODs replace meshes. This can lead to inconsistencies between the geometry and the shadows, which can cause artifacts as pages are invalidated. ...

LogAssetRegistry Error produces a path error when referring to assets on a junction/hard link/soft link

IAssetRegistry::GetChecked().ScanPathsSynchronous() now eventually calls FPathExistence::LoadExistenceData and logs the errorFPathExistence failed to gather correct capitalization from disk for <p ...

Crash on FPBDIslandManager::Reset() when exiting PIE

The editor might crash when stopping PIE in some scenarios ...

Variables displaying the wrong category on the Class Default details panel.