Unreal Engine Issues

init_unreal.py loads with errors from ML deformer module which has dependencies that are not loaded in -game runs of the editor

Crash when attempting to change the parent of a material instance constant through editor scripting

The built-in class "UMaterialEditingLibrary" provides various editor scripting functions related to creating and editing materials and material instances. One of these functions, UMaterialEditingLib ...

"Browse to Asset" on Level Instances browses to both the level instance and the current level in the content browser

CitySample - Level MassCrowd - interactions with SmartObjects/ContextualAnimScene is broken in 5.5

The 5.5 version of the CitySample project, particularly the MassCrowd scene, was not properly maintained. The previously working functionality of NPCs being able to sit on a bench is now broken. CAS ...

Commandlet Exits With Code -1073741819 and Exception FPlatformMisc::RequestExitWithStatus(1, 3, WindowsPlatformCrashContext.EngineUnhandledExceptionFilter)Engine exit requested (reason: Win RequestExit; note: exit was already requested)

When a commandlet is run it successfully completes but does not terminate the engine correctly. It appears that multiple requests are made to terminate the engine process these subsequent engine ter ...

Child widgets do not maintain the Enhanced Input bindings from their parents

When a widget blueprint is created with Enhanced Input bindings in the event graph, when it is subclassed those bindings will not work in the child. This is inconsistent with how Actors function, an ...

Crash when changing window resolution with AMD GPU, D3D11 and renderoffscreen

Context A crash can be induced with running Unreal Engine with DirectX11, a AMD GPU and running -renderoffscreen flag, and the main window is resized. This issue was first observed with the PixelStre ...

Iris - large fast arrays serialize multiple elements when only one is dirtied

This seems to be a result of how the changemask is handled for fast arrays. Because the changemask is a fixed set of bits (defined by IrisFastArrayChangeMaskBits), a single bit can represent multipl ...

Bug when loading an external project that also exists in the uprojectdirs

When launching the editor for the "external\foreign" project, the code in GetEngineAndProjectAbsoluteDirsFromExecutable ends up superseding the path returned from {{FPlatformMisc::ProjectDir() }} wi ...

[Crash] Failed to CreatePipeline on Vulkan ES31 with a special material graph