Unreal Engine Issues

[CrashReport] Assertion failed: Canary == ShaderMagic_Initialized

This is a common crash among the community since at least the 4.14 release. Additional information is not currently available. This is spread among numerous different CrashGroups between releases w ...

Crash when merging Skeletal Mesh with incomplete LOD streaming

SummaryMerging a Skeletal Mesh whose LOD streaming has not completed crashes with an AccessViolation while the vertex copy reads the Null buffers of LODs that have not been streamed inRoot cause is ...

Crash when Undo after deleting a Material Layer of a Material Instance.

In Unreal Engine version 5.5.4, the Editor crashes when performing Undo after deleting a Material Layer of a Material Instance ...

Mesh painting on staticmesh doesn't always apply Colors to All LODs

See the video [Link Removed] ...

Exporting a spawnable through Python doesn't work

CppCompileWarningSettings.NonInlinedGenCppWarningLevel messages should contain Warning\Error

The messages emitted when CppCompileWarningSettings.NonInlinedGenCppWarningLevel is set to Warning\Error should contain the literal so the tools pick them up and react accordingly. From the EPS c ...

AutoLOD changes the static meshes LOD at different distances in VR Packages and Previews than in Editor

Packaged VR Projects and VR Previews change the LOD at a closer distance than in editor. ...

Toggling SetSimulatePhysics state on a Primitive component with a child PrimitiveComponent leaks PxShapes

FBodyInstance::Weld did not check to see whether or not child components were already welded to a parent. This meant that whenever Weld was called, ShapeToBodiesMap would continue to grow in size, e ...

Editor Crashes When Duplicating Actor that Contains Additional Components

Attempting to spawn a copy of an actor that has components that were added to an instance of that actor in the level causes a crash. Spawning the actor without adding additional components to the in ...

Need addElement and addElements to allow single insertion instead of to all elements with matching tag

Since multiple dict tags can be in a plist, not just the top level, need to be able to specify to only insert once. Adding an optional once="true" attribute to these commands in UPL will allow this ...