Unreal Engine Issues

Request to add manual overrides to "Equals()" function on input modifiers

From the user:  > Up until 5.3.1 those input modifiers were identical apart from the instanced data. If you upgrade to 5.3.1, not taking the new IMC files, the sensitivity settings will never get a ...

Unimplemented Simplygon function causes empty mesh LODs and crashes

When we do the refactor for MeshDescription we miss the staticmesh reduction project settings option and change only the quadric reduction. There are two possible fixes for this issue: 1. Implemen ...

Crash when building lighting with a skylight that draw lit translucent material

A common crash affecting many users in 4.17.0 ...

Wrap function incorrect

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. ...

Building lighting can reset the package localization ID for a world

DynamicMeshBuilder.cpp does not add a value to the InTangentY variable in the AddVertex function

This was found as a result of Licensees doing a Code Review of the Engine code. Here's the code snippet in question. It seems to be missing a line similar to Vertex->TangentY = InTangentY;.:  int32 ...

Crash when save the blueprint function variable that set the StringTable asset

This issue doesn't crash in 4.21. It is rewritten as GIsSavingPackage = true in UPackage::(Save() when Blueprint is saved, but it's rewritten as false in 4.21. Workaround Do not set the String Tab ...

Pressing Play/Simulate on Window without Focus does not Function on Mac

If a user attempts to 'PIE' within a window that does not currently have focus, the 'PIE' will not execute. The user provided a video on his answerhub post which illustrates the issue clearly. In ...

Material Function with Texture Size Texture Property will cause a Crash

By accessing the texture property for texture size will cause a crash. Attached image for material graph. Tested in: 4.10.4 Texture Size Texture Property did not exist 4.11.- CL-2927265 4.12 Dev ...

Spot Lights Do Not Cast Dynamic Shadows If "Support PointLight WholeSceneShadows" is disabled

If you disable "Support PointLight WholeSceneShadows" spotlights stop casting shadows. This is working as expected in 4.20 CL# 4369336. Found in 4.21 CL# 4753647 and 4.22 CL# 4809892 This is a reg ...