Unreal Engine Issues

Crash occur when using AddSpawnableFromClass with BlueprintGeneratedClass specified

BlueprintGeneratedClass is not based UBleupint. So the following code is failed. bool UActorFactoryBlueprint::PreSpawnActor( UObject* Asset, FTransform& InOutLocation) { UBlueprint* Blueprint = ...

Overlap Issues using Tick Interval and Dedicated Server

When using a dedicated server and a class with an explicit Tick Interval set, if the class' overlaps are updated in the begin overlap event, in a non-consequential way(changing collision profile in ...

Null Redirector For Main Game Level Is Packaged Without Error After Fixing Redirector

After moving a level into a folder and fixing the redirectors (right click in content browser) the project will package a Null reference without throwing an error. This will let you create a project ...

Deleting MPC referenced in material layer cause editor crash.

[MetaSounds][Inputs] - When multiple copies of an input node are on the graph, all connections reconnect to one node when an input is renamed

If there are multiple copies of an input on the graph, when it is renamed, all the connections are broken and rerouted to a single node, orphaning the rest on the graph. I believe this may be a dupl ...

Electra video playback fails if project or package is under multibyte characters path

The URL parser encodes the input path to a URL-encoded path even if it is local, so if the path contains unicode characters (such as Japanese Kanji ), the media file cannot be read. Following worka ...

Landscapes cause Vulkan crash related to GRHISupportsAttachmentVariableRateShading

Binary (Installed Build)//UE5/Release-5.1 @CL22986940 I encountered this same crash when creating a landscape twice, but was not able to consistently reproduce it with those steps. I figured out th ...

Shadow map z-fighting when using Overlay material

Instanced Static Meshes ignore max World Position Offset Displacement for bounds after UpdateInstanceTransform is called

When an Instanced Static Mesh Component (ISMC) uses a material with a non-zero Max World Position Offset Displacement, the bounds are correctly expanded at initialization. However, after calling Upd ...

Data like Camera Tracks can get corrupted inside Level Sequences when Undoing some operations

Camera trucks can get in a invalid state when you undo certain operations. One example would be undoing a camera set that has been added to a camera track. When you undo that operation, other camera ...