Unreal Engine Issues
Unreal Engine Issues
Empty View Sets created when creating new images or panoramas
TM - Tools - Feb 16, 2026Reported in SF [Link Removed] Starting in TM 2025.2, when creating new images or panoramas, a new View Set is created with each new image or panorama. These View Sets will not have any names and ca ...
Iris - Initially dormant actors not replicated if dormancy is not enabled
UE - Networking - Iris - Feb 16, 2026With dormancy disabled, it seems that actors marked as dormant are not registered as expected with Iris. Even if the actor is woken up or flushed before making changes to its properties, the client ...
Non-deterministic actor names created by ChildActorComponent if level uses OFPA
UE - Framework - Blueprint - Feb 16, 2026The bug only happens when the ChildActorComponent is added to the BP after placing instances and saving the world. Adding the ChildActorComponent after this will result on the name of the child acto ...
Blackboard decorator node does not abort lower-priority nodes
UE - AI - Feb 16, 2026When a branch of a selector is deactivated, all auxiliary nodes and observer delegates are removed. If the branch is reactivated soon and the CurrentActiveNode remains unchanged, the behavior tree l ...
Distance Field Shadows do not work with Nanite meshes
Nanite meshes only cast virtual shadow maps and do not cast any distance field shadows, regardless of the distance of the shadow casting mesh to the camera. ...
Compiler Error when including InstancedSkinnedMeshComponent.h
The UE_EXPERIMENTAL macro is not used correctly in InstancedSkinnedMeshComponent.h. It should come after the 'class' keyword & before UInstancedSkinnedMeshComponent as specified in the documentation ...
Iris - HitObjectHandle not resolved when receiving FHitResult
UE - Networking - Iris - Feb 12, 2026This seems to occur due to an interaction between how Iris handles serializing the FGameplayAbilityTargetData_SingleTargetHit struct and how the FActorInstanceHandle HitObjectHandle in the FHitResul ...
Material Parameter Collection Track doesn't work in UMG Preview from 5.7
UE - Anim - Sequencer - Feb 12, 2026The UMG editor allows us to add a Material Parameter Control track to an animation. This track makes it possible to animate parameters used in a material. Designers can scrub the timeline and previe ...
"Move to Level" of Landscape Tool leads component scale mismatch
UE - Graphics Tools - Terrain - Landscape - Feb 12, 2026In UE 5.7.2, when moving a Landscape Component to a sub-level using Landscape Mode > Manage > Move to Level, the proxy transform is not synchronized with the root Landscape when the KeepWorldTransfo ...
HISM causing massive spikes in BuildTreeAsync
UE - Rendering - Architecture - Feb 12, 2026Loading a world partition cell containing dense foliage (30k+ instances per cell) causes spikes on lower end hardware of up to 10-15ms and can observe spikes of 2-5ms on high end hardware too primar ...