Unreal Engine Issues

Packaged C++ Project Fatal Error on Startup When Spawning Niagara System Via a Character Blueprint

Using the system blueprint node in the character blueprint will cause the packaged game to give a fatal error when running the executable. This only occurs when in a C++ project. Found in 4.20 CL# ...

Particle memory can be corrupted leading to a crash

Race condition in the late update manager

https://udn.unrealengine.com/questions/476212/race-condition-in-lateupdatemanager.html In short, the trick storing a pointer to the packed index of the primitive does not work as it is simply a p ...

VertexInterpolator Makes Landscape Materials Fail to Compile

If a VertexInterpolator is used in a material that is applied to a landscape the material will fail to compile. Found in 4.20 CL# 4369336, 4.21 CL# 4.21 CL# 4613538, 4.22 CL# 4681912 ...

Splash Screen disappears too quickly on Mobile resulting in a long black screen before game starts

A user has reported that the Splash screen for Mobile games does not last as long as it did in previous versions, resulting a longer black screen before the initial map loads. Regression?: Yes This ...

Editing Lighting Intensity Field Value Fails

You cannot change the intensity by just adding/changing numbers. You have to completely retype the entire value. Found in 4.21 CL# 4613538 and 4.22 CL# 4681912 ...

Datasmith error when attempting to package - Error: Ensure condition failed: It->Value File:Engine\Plugins\Enterprise\DatasmithContent\Source\DatasmithContent\Private\DatasmithAssetUserData.cpp

[Feature Request] Mouse-wheel zoom logic seems incorrect in UI Designer

When using the mouse wheel to zoom the Designer view, the behavior is not intuitive. (ZoomLogicDesigner.gif) in the Designer view, place the mouse near the top left corner. Use the mouse wheel to ...

When the engine version updated, partial data of TMap/TSet type of DataTable is missing

When updating to 4.21, Element previously added to DataTable is missing. This only occur when you move to 4.21. If it change from 4.19 to 4.20, DataTable will keep data. it can restore broken data b ...

When r.CustomDepth = 3 (Enabled with Stencil), the values of SceneDepth and CustomDepth are different on IOS

The user wants to express using the difference between SceneDepth and CustomDepth. However, when r.CustomDepth = 3 (Enabled with Stencil), the expression can not be realized because the SceneDepth a ...