Unreal Engine Issues

Changing number of existing UHierarchicalInstancedStaticMeshComponent in Blueprint causes crash.

If using a UHierarchicalInstancedStaticMeshComponent in a C++ class and adding instances via the OnConstruction( ) function, editor can crash. ...

Missing space for Support UV From Hit Result setting Project Settings

In the Project Settings, there is a typo for the Support UV From Hit Result Setting. There is a missing space between "UV" and "From". ...

UnrealVS cannot be installed with VS2019 16.1

If a user has Visual Studio 16.1 installed, UnrealVS will report that it is not compatible and refuse to install. ...

UHT "Type TArray is not supported by blueprint" error message is ambiguous

An overly generic error message is produced when you have a TArray UProperty that contains a non-blueprint friendly type. For example: UPROPERTY(EditAnywhere, BlueprintReadWrite, editfixedsize) TA ...

Crash when using Find Substring node if the starting position is higher than the number of characters in the string being searched

If the "Start Position" in the "Find Substring" node is larger than the number of characters in the "Search in" field a crash will occur. ...

Shader Symbols not Generated for Windows Platform when r.Shaders.Symbols=1

Shader symbols are not generated for the Windows platform. Attempts were made to set the r.Shaders.Symbols=1 value in the projects DefaultEngine.ini, the engines ConsoleVariables.ini and the engine ...

Performance decreases with the number of morph targets

Performance decreases quite a bit on characters with large number of morph targets, as soon as even one target is active.  ...

Inline edit conditions don't support undo

The Editor does not support undo after making changes Inline edit properties. Working in 4.18.3 Broken in 4.19.2 Tested in 4.18.3(3832480), 4.19.2(CL - 4033788), 4.20(CL - 4181430) , 4.21(C ...

ARCore: passthrough camera texture has blue and red channel swapped when building against gles 3.1

Using GeoMerge on fragments of a GeometryCollection (GC) will create a new single particle while removing the old particles, but although you end up with less particles, the disk file size of the GC uasset increases.

Using GeoMerge on fragments of a GeometryCollection (GC) will create a new single particle while removing the old particles, but although you end up with less particles, the disk file size of the GC ...