Unreal Engine Issues
Unreal Engine Issues
Editing a spline component in 5.4 no longer fires construction events.
UE - Editor - Workflow Systems - Apr 14, 2024Licensee found that in 5.4 the spline component when edited in editor, no longer triggered the construction script potentially breaking their art pipeline. The licensee mentioned the cause is likel ...
glDebugMessageControlKHR in InitDebugContext() causes Zenfone 5 app crashes on launch
UE - Platform - Mobile - Dec 15, 2015Game applications crash on Zenfone 5 once they're launched. This seems to be due to the InitDebugContext(). Chris requested this to be entered for tracking purposes. Chris B: I believe the problem ...
SetActorLocation does not affect WheeledVehicles
UE - Simulation - Physics - Sep 21, 2015When using SetActorPosition() on a WheeledVehicle, it does not affect it in any way. This worked previously in 4.8. This has also been tested in main CL# 2698791 This may be related with: https:// ...
Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer
UE - Simulation - Physics - Destruction - Aug 26, 2025Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer. The licensee has provided his analysis: In 5.6, when creating a Geo ...
MRQ - MovieGraphEditorExample.py on_executor_finished_delegate not called in 5.6
UE - Anim - Sequencer - MRQ - Jun 13, 2025From UDN: We are launching jobs using a modified version of MovieGraphEditorExample.py. In 5.5 everything works fine, but in 5.6 the on_executor_finished_delegate is never getting called when all th ...
Nanite mesh polygons disappearing when using masked opacity with vertex color in 5.4
UE - Graphics Features - Nanite - Jul 24, 2024In 5.4.3, a nanite enabled mesh with a material that takes its vertex color (R) and uses it as the opacity mask output in a masked blend mode material, causes the mesh to have disappearing polygons ...
Dynamic Obstacle Blueprint components do not correctly affect navmesh in standalone mode
UE - AI - Jul 21, 2015Static mesh components of blueprints with "Is Dynamic Obstacle" set to true do not correctly affect navigation when standalone mode is initially run. Once another object is moved and the navmesh is ...
Custom Primitive Data on BP instance not taking affect while in editor
UE - Rendering Architecture - Apr 5, 2023https://udn.unrealengine.com/s/case/5004z00001n9LsOAAU/custom-primitive-data-on-bp-inst ance-not-taking-affect-while-in-editor Original Repo is from 4.27, however, it still happens in 5.2. This is ...
Draw Invalidating Bounds debug view mode for Virtual Shadow Maps is gone in 5.4
UE - Graphics Features - Shadows - Jun 9, 2024The CVar "r.Shadow.Virtual.Cache.DrawInvalidatingBounds" referenced in the official 5.4 documentation for virtual shadow maps, no longer shows any bounds as the underlying code seem to be removed in ...
Noticeable Difference In Temporal AA Sharpness From 4.12 To 4.13
UE - Graphics Features - Oct 17, 2016There seems to be a noticeable difference with the temporal AA sharpness in 4.13. This was confirmed by setting Temporal Sample count and sharpness with the same settings in a 4.12 project. A side b ...