IsEditorOnly Components hidden from Component Tree when duplicating

UE - Gameplay - Blueprint Editor - Nov 14, 2018

IsEditorOnly Component is hidden when it is duplicated. This can be redisplayed by blueprint compile, but it is preferable that it is the same as when IsEditorOnly is disabled. Gif1 is the case of ...

Skel Vert/Surf Emitter Location Local Not World Space

UE - Simulation - Physics - Character - Jan 3, 2019

A Skel Vert/Surf particle system attached to a cloth actor spawns particles around the origin instead of around the actor. ...

Exposure Compensation Curve not applied in Standalone/Packaged

UE - Graphics Features - Dec 29, 2019

'Exposure Compensation Curve' is not being applied in Standalone or Packaged projects. Confirmed in 4.25 MAIN at CL 10871578 ...

Switching raytracing console variable in runtime can crash engine.

UE - Graphics Features - Lumen - May 13, 2020

Licensee reported that is caused by missing ECVF_RenderThreadSafe flag in these console variable definitions. r.RayTracing.Shadows r.RayTracing.AmbientOcclusion r.RayTracing.Reflections Here is a ...

Editor will crash during shutdown while a global Find-in-Blueprint tab is open and indexing is active.

UE - Gameplay - Blueprint - May 22, 2020

The editor will crash during shutdown if Blueprints are actively being indexed in the background. ...

Niagara Simulation Stage + DynamicMaterialParameters crash

UE - Niagara - Feb 6, 2021

deleting the code "&& SimulationStages[i]->bEnabled" in UNiagaraEmitter::GetScripts will bypass the problem [Image Removed] ...

Memory leak when rendering some meshes with ray tracing enabled

UE - Graphics Features - Jul 19, 2021

This memory leak seems to be caused by the TMemStackAllocator of FRayTracingMeshCommandOneFrameArray. Using the FDefaultAllocator for FRayTracingMeshCommandOneFrameArray works as a workaround. // ...

[Submix][Content Browser] - Deleting an unsaved Submix asset (any type) causes them to reappear when creating a new asset

UE - Audio - Submixes - May 13, 2021

Deleting unsaved Submix assets causes them to reappear the next time you create a new asset. Issue does not occur in 4.26, but does occur in 4.27 and 5.0. ...