Indirect Lighting Cache causes Flickering on Skeletal Meshes

UE - Graphics Features - Apr 30, 2017

Indirect Lighting Cache is causing the Indirect Lighting for Skeletal Meshes to flicker. I have attempted both ILCQ Volume and Point cache qualities, and it seems Point produces the most exaggerate ...

WorldCoordinate3Way produces Incorrect Axis Lerps

UE - Graphics Features - May 18, 2016

The Material Function WorldCoordinate3Way seems to incorrectly perform the Lerps from the axis contributions of the normals. An example is show here, with the left objects using the version that com ...

Deleting a Struct Attached to a Variable in a Blueprint Prevents it from Compiling

UE - Gameplay - Blueprint - Oct 20, 2015

Adding a variable of the type of a struct to a blueprint, deleting that struct, and then recompiling the blueprint fails. The variable is deleted, but the blueprint will continue to be unable to com ...

UEditorValidatorBase::ValidateLoadedAsset() is not using the K2_ValidateLoadedAsset() output, effectively ignoring the Blueprint validation

UE - Editor - Content Pipeline - May 1, 2025

UEditorValidatorBase::ValidateLoadedAsset() is not using the K2_ValidateLoadedAsset() output, effectively ignoring the Blueprint validation. The K2Result is not used later in the function, and this ...

Moving the camera around with click-drag in this project during Standalone or in packaged games causes choppy camera movement. This does not occur in standard PIE.

UE - Gameplay - Nov 27, 2015

Moving the camera around with click-drag in this project during Standalone or in packaged games causes choppy camera movement. This does not occur in standard PIE. Test project attached. Notes from ...

Crash when adding multiple collision types to a mesh

Tools - Jan 27, 2017

Adding various collision types to a single mesh will cause it to hard crash the editor. No Crash Reporter window will open. Note that this happens with the user's mesh, but I was not able to repro ...

Add Actor Local Offset does not work for Client Characters

UE - Networking - Mar 31, 2015

Add Actor Local Offset does not work for Client Characters. The client attempts to move but is forced back to start, resulting in a jitter and not the intended movement. The same movement setup in a ...

Retargeting Retain Additive Flags option keep reference to the original sequence in additive settings

UE - Anim - Rigging - Retargeting - Sep 24, 2024

Asset Details > Additive Settings when retargeting are copied over but reference to the animation sequence that was used in the original is kept. Batch retargeting process correctly identifies that ...

Auto-weld is Enabled even if the blueprint component is set to Simulate

UE - Simulation - Physics - Jan 4, 2017

Auto-weld is Enabled even if the blueprint component is set to Simulate. This only effects blueprint, static mesh actors in the world still disable Auto-weld if set to Simulate. This is a Regressio ...

Depth Not Rendered Correctly When Using CustomProjectionMatrix in SceneCaptureComponent2D

UE - Graphics Features - Apr 15, 2020

The depth is rendered incorrectly when using a custom projection matrix in SceneCaptureComponent2D. You can find an example project at [Link Removed]. You can find where the CustomProjectionMatrix ...