Unreal Engine Issues
Unreal Engine Issues
Jitter on anim sequences compressed with ACL containing large scale on root
UE - Anim - Runtime - Jul 18, 2024The ACL codecs are generating jitter in the animations on the linked UDN. This may be related to the large scale that's being applied to the root bone in the skeleton. This appears to be a regress ...
FNetGUIDCache warning when attaching non-replicated component to a replicated scene component
UE - Networking - Jul 18, 2024When the replicated scene component's AttachChildren array is replicated, the package map attempts to serialize the non-replicated component, causing the warning that the object is not supported. ...
Issue when turnning a character into ragdoll using PhysicsControlComp with async physics
UE - Anim - Synthesis - Jul 16, 2024When turnning a moving character into ragdoll, it freeze a bit with TickPhysicsAsync on. If we log the character's pelvis position, it seems jump backward in the first few ticks. Also, it only happ ...
In class UCancellableAsyncAction, methods IsRegistered() and ShouldBroadcastDelegates() still return true after Cancel() or SetReadyToDestroy() unregisters the object.
UE - Framework - Blueprint - Jun 26, 2024Class UBlueprintAsyncActionBase provides methods RegisterWithGameInstance() and SetReadyToDestroy(), which respectively register and unregister the object with the game instance. Derived class UCanc ...
Reliable subobject creation bunch may overwrite previously received property on the actor
UE - Networking - Jun 21, 2024This seems to occur because of how reliability and the retransmission of dropped data is handled in the engine. If a reliable bunch is dropped, the entire bunch will be resent, but any unreliable bu ...
Join in progress clients won't receive that a net startup actor is hidden
UE - Networking - Jun 21, 2024This seems to be because IsNetRelevantFor checks if the actor is hidden, resulting in a hidden actor not being considered relevant to clients. However, if it is a net startup actor, this will result ...
AssetRegistry has poor performance when a large map is resaved
UE - CoreTech - Jun 21, 2024A licensee reports that their large map has a 10s cost in the AssetRegistry when resaved. They took a profile and found the cost is mostly in LoadCalculatedDependencies for the map, and most of that ...
UDebugDrawService doesn't display text on Blueprint Editor viewport from UDebugComponent
UE - AI - Debugging - Jun 17, 2024By creating a DebugComponent, the texts added to this component are not displayed in the viewport of the Blueprint editor. This is because the UCanvas reference that is being passed is that of the ...
TAttributeContainer::CopyFrom crashes when container contains invalid bone indices for active mesh
UE - Anim - Runtime - Jun 16, 2024Currently there's no validation within the animation attribute container that bone ids are valid. This means that client/game code can add attributes with invalid bone ids into the container and th ...
Distant mesh / vista have visible Lumen bounces
UE - Rendering Architecture - Jun 15, 2024Objects far outside of the Lumen Scene don't temporally accumulate screen traces, leading to heavy flickering. It appears that the temporal reprojection is failing when comparing the depth in "Scree ...