Unreal Engine Issues

Non-existing config file loading could cause memory leak

The cause of this problem is the Engine has code paths which register a new allocated object to Map without deleting the previous object. In the repro project, whenever hitting Space Bar, the level ...

Deprecating a non-const blueprint interface function replaces the implementation of the event with an empty custom event

This behaviour is only observed when implementing the function as a custom event from a blueprint interface. This behaviour is not observed in actors where the blueprint interface function is implem ...

Landscape layers ending with _0, _1, etc. don't work

Result : only the layer not ending with _0 or _1 will actually render (i.e. Layer0 in the previous example) Expected result : all 3 layers can be painted, no matter their name ...

Volumetric Clouds High Quality Aerial Perspective Issue

There is a workaround to set r.VolumetricRenderTarget.Mode=1. The lines appear to be coming from the temporal component of the Volumetric Clouds. Each frame, the lines are merged in from the previou ...

PIE crash on infinite loop in a BP construction script

From the [Link Removed]: We had an issue where PIE was being stopped due to an "infinite loop" being detected in one of the blueprints construction script. This was also crashing the editor as the ...

Renaming WP map does not remove original external actors

Renaming a WP map through the content browser does not delete the external actors associated with the originally named map. The rename duplicate builder seems to work correctly and can be used inste ...

In UInstancedStaticMeshComponent, when some instances have near-zero scale, removing instances crashes the engine

Class "UInstancedStaticMeshComponent" deliberately leaves null pointers in the "InstanceBodies" array of FBodyInstances. This can be seen in methods such as: [Engine\Source\Runtime\Engine\Private\I ...

Crash when copying PF_Stencil format from the GPU to the CPU

This is a crash related to copying depth-stencil render targets to the CPU. See linked UDN for more info. ...

"Exclude From HLOD Levels" has no effect in a World Partition level set up with HLODs

Unable to recapture the network channel data after stop the profile

It appears that networking insights data is not being gathered when a delay capture is started with the "trace.send" or "trace.start" command. If we were starting from the application startup time w ...