Lighting does not properly affect landscapes under another landscape, even if Static Lighting Resolution is increased

UE - LD & Modeling - Terrain - Landscape - Apr 29, 2015

Lighting does not properly affect landscapes that are below another landscape, even after static lighting resolution is increased. This results in some areas that should be completely shadowed to ha ...

Regression: FAnimInstanceProxy memory leak when BeginDestroy() called on UAnimInstance before USkeletalMeshComponent

UE - Anim - Runtime - Feb 10, 2025

In UE 5.5, the fix applied by CL 36529858 in ue5-main updated USkeletalMeshComponent::ClearAnimScriptInstance() to call AnimScriptInstance::UninitializeAnimation() on the animation instance. This, i ...

Adding a Local Variable to a blueprint Construction Script will cause a crash

UE - Gameplay - Blueprint - Dec 18, 2014

Adding a Local Variable to a blueprint Construction Script will cause a crash ...

Socket Preview Mesh's Scale Changes While the Socket's Scale Does Not When the Mesh Editor is Reopened

Tools - Dec 22, 2017

When setting a preview mesh and a socket to a relative scale, the socket's scale is saved but the preview meshes scale changes. This occurs when the asset is saved < mesh editor closed out < mesh ed ...

Unable to Rename using the Right-Click Menu on El Capitan in Blueprints and Sources Panel

UE - Platform - Apple - Apr 4, 2016

Users are unable to rename a variable using the right-click menu within Blueprints, and the sources panel within the Content Browser. Regression? Yes. I tested the functionality of the right-click ...

Line Trace Does Not Register Hit On Bottom Of Landscape

UE - Simulation - Physics - Dec 15, 2016

When using a line trace under a landscape it no longer registers a hit on the underside. REGRESSION? Yes Worked 4.13.2 CL 3195953 Broken 4.14.1 CL 3224400 ...

Atan2() missing from Math Expression node

UE - Gameplay - Blueprint - Feb 11, 2020

Using the math expression Atan2(y,x) inside of a math expression node results in an error.  Tested in:  4.23.1 CL#9631420 ,  4.25 CL#11341939 ...

Crash when locate_bound_objects is called

UE - Anim - Sequencer - May 14, 2024

This has been tested internally using an editor utility widget yielding the same results. That small project is attached. BoundingObjectTest. 1) Open the project 2) Run the Editor Utility Widget ...

Landscape Grass Type will not build with static lighting leaving 'Lighting needs to be rebuilt warning.'

UE - World Creation - Worldbuilding Tools - Foliage - Sep 3, 2015

When using the Landscape Grass Type and using a Static or Stationary light will throw the 'Lighting needs to be rebuilt' warning. ...

Crash from generated Merged Actor with no created lightmap UV

UE - Gameplay - Nov 11, 2016

If you import a static mesh with no setup lightmap and uncheck the option for Generate lightmap UV so that only the UV Channel 0 is present. When you use the Merge Actor tool with a single one of th ...