Unreal Engine Issues
Unreal Engine Issues
Some enums getting reset in released 4.15 preview 2.
UE - Gameplay - Blueprint - Jan 28, 2017Custom Primitive Data on BP instance not taking affect while in editor
UE - Rendering - Architecture - Apr 5, 2023Original Repo is from 4.27, however, it still happens in 5.2. This is happening because the Instance Data system does not update the field UPrimitiveComponent::CustomPrimitiveDataInternal from the d ...
SetControlRotation does not affect VR
UE - Platform - XR - Oct 1, 2015Using a Set Control Rotation node does not change the camera rotation when in VR mode. ...
Modified a mesh used as complex collision mesh does not affect the collision in the editor
UE - Editor - Feb 17, 2020When a user changes any properties (for calling PostEditChangeProperty ) in parent static mesh or restarting the editor, the modified mesh is applied correctly. how to reproduce: [Link Removed] ...
SkyLight Leaking does not affect reflections when the SkyLight is static but static lighting is disallowed
UE - Rendering - Graphics Features - Sep 10, 2025Reflections do not receive SkyLight leakage contribution from a static SkyLight when static lighting is disallowed. This is caused by the function UpdateSkyIrradianceGpuBuffer checking if the SkyLig ...
Can Ever Affect Navigation does not detect updates to collision settings at runtime
UE - AI - Jan 27, 2016When a mesh has its collision updated during runtime the navigation around the mesh does not update. Workaround: If the mesh is set to simulate physics then updates to its collision will update nav ...
Crash on garbage collection - Encountered 20 object(s) breaking GC Clusters assumptions.
UE - Foundation - Core - Aug 15, 2018Garbage collection crash during opening cinematic. Note after crashing and relaunching the game the saved file appears as 8% complete instead of 0%. Note this crash is also occurring with //UE4/D ...
Crash when editing gameplay tag query in a structure
UE - Gameplay - Blueprint - Feb 20, 2017When I try to edit Gameplay tag query in a blueprint structure the editor crashes. Regression: No. This issue affects versions: 4.15, 4.14.3, 4.13.2 (Binary Versions) ...
SetActorEnableCollision does not affect Destructible meshes
UE - Simulation - Physics - Destruction - Jan 4, 2016Setting the SetActorEnableCollision blueprint node to false does not disable collision for a destructible mesh. Workaround: Adding a static Mesh component and setting any mesh will cause the collis ...
SkyLight is not affecting the volumetric fog
UE - Graphics Features - Lumen - Nov 24, 2022Looks like this behavior was working as expected until 5.1 Preview 2 ...